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Ruby: track flow from *args to positional params
This models flow in the following case:
def foo(x, y)
sink x # 1
sink y # 2
end
args = [source 1, source 2]
foo(*args)
We do this by introducing a SynthSplatParameterNode which accepts
content from the splat argument, if one is given at the callsite.
From this node we add read steps to each positional parameter.
This commit is contained in:
Harry Maclean
@@ -439,6 +439,7 @@ private module Cached {
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} or
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THashSplatArgumentPosition() or
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TSplatAllArgumentPosition() or
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TSplatArgumentPosition(int pos) { exists(Call c | c.getArgument(pos) instanceof SplatExpr) } or
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TAnyArgumentPosition() or
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TAnyKeywordArgumentPosition()
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@@ -468,6 +469,10 @@ private module Cached {
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// synthetic parameter position.
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TSynthHashSplatParameterPosition() or
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TSplatAllParameterPosition() or
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TSplatParameterPosition(int pos) {
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exists(Parameter p | p.getPosition() = pos and p instanceof SplatParameter)
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} or
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TSynthSplatParameterPosition() or
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TAnyParameterPosition() or
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TAnyKeywordParameterPosition()
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}
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@@ -1288,8 +1293,12 @@ class ParameterPosition extends TParameterPosition {
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predicate isSynthHashSplat() { this = TSynthHashSplatParameterPosition() }
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predicate isSynthSplat() { this = TSynthSplatParameterPosition() }
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predicate isSplatAll() { this = TSplatAllParameterPosition() }
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predicate isSplat(int n) { this = TSplatParameterPosition(n) }
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/**
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* Holds if this position represents any parameter, except `self` parameters. This
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* includes both positional, named, and block parameters.
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@@ -1320,6 +1329,10 @@ class ParameterPosition extends TParameterPosition {
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this.isAny() and result = "any"
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or
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this.isAnyNamed() and result = "any-named"
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or
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this.isSynthSplat() and result = "synthetic *"
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or
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exists(int pos | this.isSplat(pos) and result = "* (position " + pos + ")")
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}
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}
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@@ -1354,6 +1367,8 @@ class ArgumentPosition extends TArgumentPosition {
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predicate isSplatAll() { this = TSplatAllArgumentPosition() }
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predicate isSplat(int n) { this = TSplatArgumentPosition(n) }
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/** Gets a textual representation of this position. */
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string toString() {
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this.isSelf() and result = "self"
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@@ -1371,6 +1386,8 @@ class ArgumentPosition extends TArgumentPosition {
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this.isHashSplat() and result = "**"
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or
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this.isSplatAll() and result = "*"
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or
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exists(int pos | this.isSplat(pos) and result = "* (position " + pos + ")")
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}
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}
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@@ -1408,6 +1425,11 @@ predicate parameterMatch(ParameterPosition ppos, ArgumentPosition apos) {
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ppos.isAnyNamed() and apos.isKeyword(_)
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or
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apos.isAnyNamed() and ppos.isKeyword(_)
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or
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ppos.isSynthSplat() and apos.isSplatAll()
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or
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// Exact splat match
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exists(int n | apos.isSplat(n) and ppos.isSplat(n))
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}
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/**
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@@ -245,6 +245,7 @@ private class Argument extends CfgNodes::ExprCfgNode {
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not this.getExpr() instanceof BlockArgument and
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not this.getExpr().(Pair).getKey().getConstantValue().isSymbol(_) and
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not this.getExpr() instanceof HashSplatExpr and
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not this.getExpr() instanceof SplatExpr and
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arg.isPositional(i)
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)
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or
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@@ -261,8 +262,15 @@ private class Argument extends CfgNodes::ExprCfgNode {
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arg.isHashSplat()
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or
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this = call.getArgument(0) and
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not exists(call.getArgument(1)) and
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this.getExpr() instanceof SplatExpr and
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arg.isSplatAll()
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or
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exists(int pos | pos > 0 or exists(call.getArgument(pos + 1)) |
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this = call.getArgument(pos) and
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this.getExpr() instanceof SplatExpr and
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arg.isSplat(pos)
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)
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}
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/** Holds if this expression is the `i`th argument of `c`. */
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@@ -300,6 +308,10 @@ private module Cached {
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TSynthHashSplatParameterNode(DataFlowCallable c) {
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isParameterNode(_, c, any(ParameterPosition p | p.isKeyword(_)))
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} or
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TSynthSplatParameterNode(DataFlowCallable c) {
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exists(c.asCallable()) and // exclude library callables
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isParameterNode(_, c, any(ParameterPosition p | p.isPositional(_)))
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} or
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TExprPostUpdateNode(CfgNodes::ExprCfgNode n) {
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// filter out nodes that clearly don't need post-update nodes
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isNonConstantExpr(n) and
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@@ -318,7 +330,7 @@ private module Cached {
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class TSourceParameterNode =
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TNormalParameterNode or TBlockParameterNode or TSelfParameterNode or
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TSynthHashSplatParameterNode;
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TSynthHashSplatParameterNode or TSynthSplatParameterNode;
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cached
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Location getLocation(NodeImpl n) { result = n.getLocationImpl() }
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@@ -514,6 +526,8 @@ predicate nodeIsHidden(Node n) {
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n instanceof SynthHashSplatParameterNode
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or
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n instanceof SynthHashSplatArgumentNode
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or
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n instanceof SynthSplatParameterNode
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}
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/** An SSA definition, viewed as a node in a data flow graph. */
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@@ -610,7 +624,13 @@ private module ParameterNodes {
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pos.isHashSplat()
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or
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parameter = callable.getParameter(0).(SplatParameter) and
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not exists(callable.getParameter(1)) and
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pos.isSplatAll()
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or
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exists(int n | n > 0 |
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parameter = callable.getParameter(n).(SplatParameter) and
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pos.isSplat(n)
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)
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)
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}
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@@ -749,6 +769,66 @@ private module ParameterNodes {
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final override string toStringImpl() { result = "**kwargs" }
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}
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/**
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* A synthetic data-flow node to allow flow to positional parameters from a splat argument.
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*
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* For example, in the following code:
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*
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* ```rb
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* def foo(x, y); end
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*
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* foo(*[a, b])
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* ```
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*
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* We want `a` to flow to `x` and `b` to flow to `y`. We do this by constructing
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* a `SynthSplatParameterNode` for the method `foo`, and matching the splat argument to this
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* parameter node via `parameterMatch/2`. We then add read steps from this node to parameters
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* `x` and `y`, for content at indices 0 and 1 respectively (see `readStep`).
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*
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* We don't yet correctly handle cases where the splat argument is not the first argument, e.g. in
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* ```rb
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* foo(a, *[b])
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* ```
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*/
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class SynthSplatParameterNode extends ParameterNodeImpl, TSynthSplatParameterNode {
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private DataFlowCallable callable;
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SynthSplatParameterNode() { this = TSynthSplatParameterNode(callable) }
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/**
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* Gets a parameter which will contain the value given by `c`, assuming
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* that the method was called with a single splat argument.
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* For example, if the synth splat parameter is for the following method
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*
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* ```rb
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* def foo(x, y, a:, *rest)
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* end
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* ```
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*
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* Then `getAParameter(element 0) = x` and `getAParameter(element 1) = y`.
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*/
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ParameterNode getAParameter(ContentSet c) {
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exists(int n |
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isParameterNode(result, callable, (any(ParameterPosition p | p.isPositional(n)))) and
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c = getPositionalContent(n)
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)
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}
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final override Parameter getParameter() { none() }
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final override predicate isParameterOf(DataFlowCallable c, ParameterPosition pos) {
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c = callable and pos.isSynthSplat()
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}
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final override CfgScope getCfgScope() { result = callable.asCallable() }
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final override DataFlowCallable getEnclosingCallable() { result = callable }
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final override Location getLocationImpl() { result = callable.getLocation() }
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final override string toStringImpl() { result = "synthetic *args" }
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}
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/** A parameter for a library callable with a flow summary. */
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class SummaryParameterNode extends ParameterNodeImpl, FlowSummaryNode {
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private ParameterPosition pos_;
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@@ -1099,6 +1179,13 @@ private ContentSet getKeywordContent(string name) {
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)
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}
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private ContentSet getPositionalContent(int n) {
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exists(ConstantValue::ConstantIntegerValue i |
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result.isSingleton(TKnownElementContent(i)) and
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i.isInt(n)
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)
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}
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/**
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* Subset of `storeStep` that should be shared with type-tracking.
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*/
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@@ -1187,6 +1274,8 @@ predicate readStep(Node node1, ContentSet c, Node node2) {
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or
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node2 = node1.(SynthHashSplatParameterNode).getAKeywordParameter(c)
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or
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node2 = node1.(SynthSplatParameterNode).getAParameter(c)
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or
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FlowSummaryImpl::Private::Steps::summaryReadStep(node1.(FlowSummaryNode).getSummaryNode(), c,
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node2.(FlowSummaryNode).getSummaryNode())
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}
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@@ -2796,6 +2796,7 @@
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| UseUseExplosion.rb:21:3675:21:3680 | call to use | UseUseExplosion.rb:21:3670:21:3680 | else ... |
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| UseUseExplosion.rb:21:3686:21:3696 | else ... | UseUseExplosion.rb:21:9:21:3700 | if ... |
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| UseUseExplosion.rb:21:3691:21:3696 | call to use | UseUseExplosion.rb:21:3686:21:3696 | else ... |
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| UseUseExplosion.rb:24:5:25:7 | synthetic *args | UseUseExplosion.rb:24:13:24:13 | i |
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| UseUseExplosion.rb:24:5:25:7 | use | UseUseExplosion.rb:1:1:26:3 | C |
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| file://:0:0:0:0 | [summary param] position 0 in & | file://:0:0:0:0 | [summary] read: Argument[0].Element[any] in & |
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| file://:0:0:0:0 | [summary param] position 0 in + | file://:0:0:0:0 | [summary] read: Argument[0].Element[any] in + |
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@@ -2840,6 +2841,7 @@
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| file://:0:0:0:0 | [summary] read: Argument[0].Element[any] in Hash[] | file://:0:0:0:0 | [summary] read: Argument[0].Element[any].Element[1] in Hash[] |
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| local_dataflow.rb:1:1:7:3 | self (foo) | local_dataflow.rb:3:8:3:10 | self |
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| local_dataflow.rb:1:1:7:3 | self in foo | local_dataflow.rb:1:1:7:3 | self (foo) |
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| local_dataflow.rb:1:1:7:3 | synthetic *args | local_dataflow.rb:1:9:1:9 | a |
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| local_dataflow.rb:1:1:150:3 | self (local_dataflow.rb) | local_dataflow.rb:49:1:53:3 | self |
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| local_dataflow.rb:1:9:1:9 | a | local_dataflow.rb:1:9:1:9 | a |
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| local_dataflow.rb:1:9:1:9 | a | local_dataflow.rb:2:7:2:7 | a |
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@@ -2874,6 +2876,7 @@
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| local_dataflow.rb:10:5:13:3 | __synth__0__1 | local_dataflow.rb:10:5:13:3 | __synth__0__1 |
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| local_dataflow.rb:10:5:13:3 | __synth__0__1 | local_dataflow.rb:10:9:10:9 | x |
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| local_dataflow.rb:10:5:13:3 | call to each | local_dataflow.rb:10:1:13:3 | ... = ... |
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| local_dataflow.rb:10:5:13:3 | synthetic *args | local_dataflow.rb:10:5:13:3 | __synth__0__1 |
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| local_dataflow.rb:10:9:10:9 | x | local_dataflow.rb:12:5:12:5 | x |
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| local_dataflow.rb:10:14:10:18 | [post] array | local_dataflow.rb:15:10:15:14 | array |
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| local_dataflow.rb:10:14:10:18 | array | local_dataflow.rb:15:10:15:14 | array |
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@@ -2883,6 +2886,7 @@
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| local_dataflow.rb:15:1:17:3 | __synth__0__1 | local_dataflow.rb:15:1:17:3 | __synth__0__1 |
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| local_dataflow.rb:15:1:17:3 | __synth__0__1 | local_dataflow.rb:15:1:17:3 | __synth__0__1 |
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| local_dataflow.rb:15:1:17:3 | __synth__0__1 | local_dataflow.rb:15:5:15:5 | x |
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| local_dataflow.rb:15:1:17:3 | synthetic *args | local_dataflow.rb:15:1:17:3 | __synth__0__1 |
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| local_dataflow.rb:15:10:15:14 | [post] array | local_dataflow.rb:19:10:19:14 | array |
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| local_dataflow.rb:15:10:15:14 | array | local_dataflow.rb:19:10:19:14 | array |
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| local_dataflow.rb:16:9:16:10 | 10 | local_dataflow.rb:16:3:16:10 | break |
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@@ -2890,6 +2894,7 @@
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| local_dataflow.rb:19:1:21:3 | __synth__0__1 | local_dataflow.rb:19:1:21:3 | __synth__0__1 |
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| local_dataflow.rb:19:1:21:3 | __synth__0__1 | local_dataflow.rb:19:1:21:3 | __synth__0__1 |
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| local_dataflow.rb:19:1:21:3 | __synth__0__1 | local_dataflow.rb:19:5:19:5 | x |
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| local_dataflow.rb:19:1:21:3 | synthetic *args | local_dataflow.rb:19:1:21:3 | __synth__0__1 |
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| local_dataflow.rb:19:5:19:5 | x | local_dataflow.rb:20:6:20:6 | x |
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| local_dataflow.rb:20:6:20:6 | x | local_dataflow.rb:20:6:20:10 | ... > ... |
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| local_dataflow.rb:20:10:20:10 | 1 | local_dataflow.rb:20:6:20:10 | ... > ... |
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@@ -2901,11 +2906,13 @@
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| local_dataflow.rb:30:14:30:20 | "class" | local_dataflow.rb:30:5:30:24 | C |
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| local_dataflow.rb:32:5:32:25 | bar | local_dataflow.rb:32:1:32:1 | x |
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| local_dataflow.rb:32:5:32:25 | bar | local_dataflow.rb:32:1:32:25 | ... = ... |
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| local_dataflow.rb:34:1:39:3 | synthetic *args | local_dataflow.rb:34:7:34:7 | x |
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| local_dataflow.rb:34:7:34:7 | x | local_dataflow.rb:34:7:34:7 | x |
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| local_dataflow.rb:34:7:34:7 | x | local_dataflow.rb:35:6:35:6 | x |
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| local_dataflow.rb:35:6:35:6 | x | local_dataflow.rb:35:6:35:11 | ... == ... |
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| local_dataflow.rb:35:11:35:11 | 4 | local_dataflow.rb:35:6:35:11 | ... == ... |
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| local_dataflow.rb:36:13:36:13 | 7 | local_dataflow.rb:36:6:36:13 | return |
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| local_dataflow.rb:41:1:47:3 | synthetic *args | local_dataflow.rb:41:7:41:7 | x |
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| local_dataflow.rb:41:7:41:7 | x | local_dataflow.rb:41:7:41:7 | x |
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| local_dataflow.rb:41:7:41:7 | x | local_dataflow.rb:42:6:42:6 | x |
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| local_dataflow.rb:42:6:42:6 | x | local_dataflow.rb:42:6:42:11 | ... == ... |
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@@ -2924,8 +2931,10 @@
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| local_dataflow.rb:51:20:51:20 | x | local_dataflow.rb:51:20:51:24 | ... < ... |
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| local_dataflow.rb:51:24:51:24 | 9 | local_dataflow.rb:51:20:51:24 | ... < ... |
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| local_dataflow.rb:55:5:55:13 | Array | local_dataflow.rb:55:5:55:13 | call to [] |
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| local_dataflow.rb:57:1:58:3 | synthetic *args | local_dataflow.rb:57:9:57:9 | x |
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| local_dataflow.rb:60:1:90:3 | self (test_case) | local_dataflow.rb:78:12:78:20 | self |
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| local_dataflow.rb:60:1:90:3 | self in test_case | local_dataflow.rb:60:1:90:3 | self (test_case) |
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| local_dataflow.rb:60:1:90:3 | synthetic *args | local_dataflow.rb:60:15:60:15 | x |
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| local_dataflow.rb:60:15:60:15 | x | local_dataflow.rb:60:15:60:15 | x |
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| local_dataflow.rb:60:15:60:15 | x | local_dataflow.rb:61:12:61:12 | x |
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| local_dataflow.rb:61:7:68:5 | SSA phi read(x) | local_dataflow.rb:69:12:69:12 | x |
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@@ -3098,6 +3107,7 @@
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| local_dataflow.rb:118:3:118:11 | call to source | local_dataflow.rb:118:3:118:31 | call to tap |
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| local_dataflow.rb:118:3:118:11 | self | local_dataflow.rb:119:3:119:31 | self |
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| local_dataflow.rb:118:17:118:31 | <captured entry> self | local_dataflow.rb:118:23:118:29 | self |
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| local_dataflow.rb:118:17:118:31 | synthetic *args | local_dataflow.rb:118:20:118:20 | x |
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| local_dataflow.rb:118:20:118:20 | x | local_dataflow.rb:118:20:118:20 | x |
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| local_dataflow.rb:118:20:118:20 | x | local_dataflow.rb:118:28:118:28 | x |
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| local_dataflow.rb:119:3:119:31 | [post] self | local_dataflow.rb:119:8:119:16 | self |
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@@ -3112,8 +3122,10 @@
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| local_dataflow.rb:123:8:123:20 | call to dup | local_dataflow.rb:123:8:123:45 | call to tap |
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| local_dataflow.rb:123:8:123:45 | call to tap | local_dataflow.rb:123:8:123:49 | call to dup |
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| local_dataflow.rb:123:26:123:45 | <captured entry> self | local_dataflow.rb:123:32:123:43 | self |
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| local_dataflow.rb:123:26:123:45 | synthetic *args | local_dataflow.rb:123:29:123:29 | x |
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| local_dataflow.rb:126:1:128:3 | self (use) | local_dataflow.rb:127:3:127:8 | self |
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| local_dataflow.rb:126:1:128:3 | self in use | local_dataflow.rb:126:1:128:3 | self (use) |
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| local_dataflow.rb:126:1:128:3 | synthetic *args | local_dataflow.rb:126:9:126:9 | x |
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| local_dataflow.rb:130:1:150:3 | self (use_use_madness) | local_dataflow.rb:132:6:132:11 | self |
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| local_dataflow.rb:130:1:150:3 | self in use_use_madness | local_dataflow.rb:130:1:150:3 | self (use_use_madness) |
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| local_dataflow.rb:131:3:131:3 | x | local_dataflow.rb:132:10:132:10 | x |
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@@ -42,15 +42,49 @@ edges
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| params_flow.rb:41:24:41:29 | ** ... [element :p1] | params_flow.rb:16:13:16:14 | p1 |
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| params_flow.rb:41:26:41:29 | args [element :p1] | params_flow.rb:41:24:41:29 | ** ... [element :p1] |
|
||||
| params_flow.rb:44:12:44:20 | call to taint | params_flow.rb:9:16:9:17 | p1 |
|
||||
| params_flow.rb:46:1:46:4 | args [element 0] | params_flow.rb:47:13:47:16 | args [element 0] |
|
||||
| params_flow.rb:46:1:46:4 | args [element 1] | params_flow.rb:47:13:47:16 | args [element 1] |
|
||||
| params_flow.rb:46:9:46:17 | call to taint | params_flow.rb:46:1:46:4 | args [element 0] |
|
||||
| params_flow.rb:46:20:46:28 | call to taint | params_flow.rb:46:1:46:4 | args [element 1] |
|
||||
| params_flow.rb:47:12:47:16 | * ... [element 0] | params_flow.rb:9:16:9:17 | p1 |
|
||||
| params_flow.rb:47:12:47:16 | * ... [element 1] | params_flow.rb:9:20:9:21 | p2 |
|
||||
| params_flow.rb:47:13:47:16 | args [element 0] | params_flow.rb:47:12:47:16 | * ... [element 0] |
|
||||
| params_flow.rb:47:13:47:16 | args [element 1] | params_flow.rb:47:12:47:16 | * ... [element 1] |
|
||||
| params_flow.rb:49:13:49:14 | p1 | params_flow.rb:50:10:50:11 | p1 |
|
||||
| params_flow.rb:54:9:54:17 | call to taint | params_flow.rb:49:13:49:14 | p1 |
|
||||
| params_flow.rb:57:9:57:17 | call to taint | params_flow.rb:49:13:49:14 | p1 |
|
||||
| params_flow.rb:62:1:62:4 | args | params_flow.rb:66:13:66:16 | args |
|
||||
| params_flow.rb:62:8:62:16 | call to taint | params_flow.rb:62:1:62:4 | args |
|
||||
| params_flow.rb:63:16:63:17 | *x [element 0] | params_flow.rb:64:10:64:10 | x [element 0] |
|
||||
| params_flow.rb:64:10:64:10 | x [element 0] | params_flow.rb:64:10:64:13 | ...[...] |
|
||||
| params_flow.rb:66:12:66:16 | * ... [element 0] | params_flow.rb:63:16:63:17 | *x [element 0] |
|
||||
| params_flow.rb:66:13:66:16 | args | params_flow.rb:66:12:66:16 | * ... [element 0] |
|
||||
| params_flow.rb:49:17:49:24 | *posargs [element 0] | params_flow.rb:51:11:51:17 | posargs [element 0] |
|
||||
| params_flow.rb:51:11:51:17 | posargs [element 0] | params_flow.rb:51:11:51:20 | ...[...] |
|
||||
| params_flow.rb:51:11:51:20 | ...[...] | params_flow.rb:51:10:51:21 | ( ... ) |
|
||||
| params_flow.rb:55:9:55:17 | call to taint | params_flow.rb:49:13:49:14 | p1 |
|
||||
| params_flow.rb:57:1:57:4 | args [element 0] | params_flow.rb:58:21:58:24 | args [element 0] |
|
||||
| params_flow.rb:57:9:57:17 | call to taint | params_flow.rb:57:1:57:4 | args [element 0] |
|
||||
| params_flow.rb:58:9:58:17 | call to taint | params_flow.rb:49:13:49:14 | p1 |
|
||||
| params_flow.rb:58:20:58:24 | * ... [element 0] | params_flow.rb:49:17:49:24 | *posargs [element 0] |
|
||||
| params_flow.rb:58:21:58:24 | args [element 0] | params_flow.rb:58:20:58:24 | * ... [element 0] |
|
||||
| params_flow.rb:60:1:60:4 | args [element 0] | params_flow.rb:61:10:61:13 | args [element 0] |
|
||||
| params_flow.rb:60:9:60:17 | call to taint | params_flow.rb:60:1:60:4 | args [element 0] |
|
||||
| params_flow.rb:61:9:61:13 | * ... [element 0] | params_flow.rb:49:13:49:14 | p1 |
|
||||
| params_flow.rb:61:10:61:13 | args [element 0] | params_flow.rb:61:9:61:13 | * ... [element 0] |
|
||||
| params_flow.rb:63:1:63:4 | args | params_flow.rb:67:13:67:16 | args |
|
||||
| params_flow.rb:63:8:63:16 | call to taint | params_flow.rb:63:1:63:4 | args |
|
||||
| params_flow.rb:64:16:64:17 | *x [element 0] | params_flow.rb:65:10:65:10 | x [element 0] |
|
||||
| params_flow.rb:65:10:65:10 | x [element 0] | params_flow.rb:65:10:65:13 | ...[...] |
|
||||
| params_flow.rb:67:12:67:16 | * ... [element 0] | params_flow.rb:64:16:64:17 | *x [element 0] |
|
||||
| params_flow.rb:67:13:67:16 | args | params_flow.rb:67:12:67:16 | * ... [element 0] |
|
||||
| params_flow.rb:69:14:69:14 | x | params_flow.rb:70:10:70:10 | x |
|
||||
| params_flow.rb:69:17:69:17 | y | params_flow.rb:71:10:71:10 | y |
|
||||
| params_flow.rb:69:24:69:24 | w | params_flow.rb:74:10:74:10 | w |
|
||||
| params_flow.rb:69:27:69:27 | r | params_flow.rb:75:10:75:10 | r |
|
||||
| params_flow.rb:78:10:78:18 | call to taint | params_flow.rb:69:14:69:14 | x |
|
||||
| params_flow.rb:78:21:78:29 | call to taint | params_flow.rb:69:17:69:17 | y |
|
||||
| params_flow.rb:78:43:78:51 | call to taint | params_flow.rb:69:24:69:24 | w |
|
||||
| params_flow.rb:78:54:78:62 | call to taint | params_flow.rb:69:27:69:27 | r |
|
||||
| params_flow.rb:81:10:81:18 | call to taint | params_flow.rb:69:14:69:14 | x |
|
||||
| params_flow.rb:83:14:83:14 | t | params_flow.rb:84:10:84:10 | t |
|
||||
| params_flow.rb:83:17:83:17 | u | params_flow.rb:85:10:85:10 | u |
|
||||
| params_flow.rb:83:23:83:23 | w | params_flow.rb:87:10:87:10 | w |
|
||||
| params_flow.rb:94:10:94:18 | call to taint | params_flow.rb:83:14:83:14 | t |
|
||||
| params_flow.rb:94:21:94:29 | call to taint | params_flow.rb:83:17:83:17 | u |
|
||||
| params_flow.rb:94:39:94:47 | call to taint | params_flow.rb:83:23:83:23 | w |
|
||||
nodes
|
||||
| params_flow.rb:9:16:9:17 | p1 | semmle.label | p1 |
|
||||
| params_flow.rb:9:20:9:21 | p2 | semmle.label | p2 |
|
||||
@@ -100,22 +134,66 @@ nodes
|
||||
| params_flow.rb:41:24:41:29 | ** ... [element :p1] | semmle.label | ** ... [element :p1] |
|
||||
| params_flow.rb:41:26:41:29 | args [element :p1] | semmle.label | args [element :p1] |
|
||||
| params_flow.rb:44:12:44:20 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:46:1:46:4 | args [element 0] | semmle.label | args [element 0] |
|
||||
| params_flow.rb:46:1:46:4 | args [element 1] | semmle.label | args [element 1] |
|
||||
| params_flow.rb:46:9:46:17 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:46:20:46:28 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:47:12:47:16 | * ... [element 0] | semmle.label | * ... [element 0] |
|
||||
| params_flow.rb:47:12:47:16 | * ... [element 1] | semmle.label | * ... [element 1] |
|
||||
| params_flow.rb:47:13:47:16 | args [element 0] | semmle.label | args [element 0] |
|
||||
| params_flow.rb:47:13:47:16 | args [element 1] | semmle.label | args [element 1] |
|
||||
| params_flow.rb:49:13:49:14 | p1 | semmle.label | p1 |
|
||||
| params_flow.rb:49:17:49:24 | *posargs [element 0] | semmle.label | *posargs [element 0] |
|
||||
| params_flow.rb:50:10:50:11 | p1 | semmle.label | p1 |
|
||||
| params_flow.rb:54:9:54:17 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:51:10:51:21 | ( ... ) | semmle.label | ( ... ) |
|
||||
| params_flow.rb:51:11:51:17 | posargs [element 0] | semmle.label | posargs [element 0] |
|
||||
| params_flow.rb:51:11:51:20 | ...[...] | semmle.label | ...[...] |
|
||||
| params_flow.rb:55:9:55:17 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:57:1:57:4 | args [element 0] | semmle.label | args [element 0] |
|
||||
| params_flow.rb:57:9:57:17 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:62:1:62:4 | args | semmle.label | args |
|
||||
| params_flow.rb:62:8:62:16 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:63:16:63:17 | *x [element 0] | semmle.label | *x [element 0] |
|
||||
| params_flow.rb:64:10:64:10 | x [element 0] | semmle.label | x [element 0] |
|
||||
| params_flow.rb:64:10:64:13 | ...[...] | semmle.label | ...[...] |
|
||||
| params_flow.rb:66:12:66:16 | * ... [element 0] | semmle.label | * ... [element 0] |
|
||||
| params_flow.rb:66:13:66:16 | args | semmle.label | args |
|
||||
| params_flow.rb:58:9:58:17 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:58:20:58:24 | * ... [element 0] | semmle.label | * ... [element 0] |
|
||||
| params_flow.rb:58:21:58:24 | args [element 0] | semmle.label | args [element 0] |
|
||||
| params_flow.rb:60:1:60:4 | args [element 0] | semmle.label | args [element 0] |
|
||||
| params_flow.rb:60:9:60:17 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:61:9:61:13 | * ... [element 0] | semmle.label | * ... [element 0] |
|
||||
| params_flow.rb:61:10:61:13 | args [element 0] | semmle.label | args [element 0] |
|
||||
| params_flow.rb:63:1:63:4 | args | semmle.label | args |
|
||||
| params_flow.rb:63:8:63:16 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:64:16:64:17 | *x [element 0] | semmle.label | *x [element 0] |
|
||||
| params_flow.rb:65:10:65:10 | x [element 0] | semmle.label | x [element 0] |
|
||||
| params_flow.rb:65:10:65:13 | ...[...] | semmle.label | ...[...] |
|
||||
| params_flow.rb:67:12:67:16 | * ... [element 0] | semmle.label | * ... [element 0] |
|
||||
| params_flow.rb:67:13:67:16 | args | semmle.label | args |
|
||||
| params_flow.rb:69:14:69:14 | x | semmle.label | x |
|
||||
| params_flow.rb:69:17:69:17 | y | semmle.label | y |
|
||||
| params_flow.rb:69:24:69:24 | w | semmle.label | w |
|
||||
| params_flow.rb:69:27:69:27 | r | semmle.label | r |
|
||||
| params_flow.rb:70:10:70:10 | x | semmle.label | x |
|
||||
| params_flow.rb:71:10:71:10 | y | semmle.label | y |
|
||||
| params_flow.rb:74:10:74:10 | w | semmle.label | w |
|
||||
| params_flow.rb:75:10:75:10 | r | semmle.label | r |
|
||||
| params_flow.rb:78:10:78:18 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:78:21:78:29 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:78:43:78:51 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:78:54:78:62 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:81:10:81:18 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:83:14:83:14 | t | semmle.label | t |
|
||||
| params_flow.rb:83:17:83:17 | u | semmle.label | u |
|
||||
| params_flow.rb:83:23:83:23 | w | semmle.label | w |
|
||||
| params_flow.rb:84:10:84:10 | t | semmle.label | t |
|
||||
| params_flow.rb:85:10:85:10 | u | semmle.label | u |
|
||||
| params_flow.rb:87:10:87:10 | w | semmle.label | w |
|
||||
| params_flow.rb:94:10:94:18 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:94:21:94:29 | call to taint | semmle.label | call to taint |
|
||||
| params_flow.rb:94:39:94:47 | call to taint | semmle.label | call to taint |
|
||||
subpaths
|
||||
#select
|
||||
| params_flow.rb:10:10:10:11 | p1 | params_flow.rb:14:12:14:19 | call to taint | params_flow.rb:10:10:10:11 | p1 | $@ | params_flow.rb:14:12:14:19 | call to taint | call to taint |
|
||||
| params_flow.rb:10:10:10:11 | p1 | params_flow.rb:44:12:44:20 | call to taint | params_flow.rb:10:10:10:11 | p1 | $@ | params_flow.rb:44:12:44:20 | call to taint | call to taint |
|
||||
| params_flow.rb:10:10:10:11 | p1 | params_flow.rb:46:9:46:17 | call to taint | params_flow.rb:10:10:10:11 | p1 | $@ | params_flow.rb:46:9:46:17 | call to taint | call to taint |
|
||||
| params_flow.rb:11:10:11:11 | p2 | params_flow.rb:14:22:14:29 | call to taint | params_flow.rb:11:10:11:11 | p2 | $@ | params_flow.rb:14:22:14:29 | call to taint | call to taint |
|
||||
| params_flow.rb:11:10:11:11 | p2 | params_flow.rb:46:20:46:28 | call to taint | params_flow.rb:11:10:11:11 | p2 | $@ | params_flow.rb:46:20:46:28 | call to taint | call to taint |
|
||||
| params_flow.rb:17:10:17:11 | p1 | params_flow.rb:21:13:21:20 | call to taint | params_flow.rb:17:10:17:11 | p1 | $@ | params_flow.rb:21:13:21:20 | call to taint | call to taint |
|
||||
| params_flow.rb:17:10:17:11 | p1 | params_flow.rb:22:27:22:34 | call to taint | params_flow.rb:17:10:17:11 | p1 | $@ | params_flow.rb:22:27:22:34 | call to taint | call to taint |
|
||||
| params_flow.rb:17:10:17:11 | p1 | params_flow.rb:23:33:23:40 | call to taint | params_flow.rb:17:10:17:11 | p1 | $@ | params_flow.rb:23:33:23:40 | call to taint | call to taint |
|
||||
@@ -131,6 +209,16 @@ subpaths
|
||||
| params_flow.rb:28:10:28:22 | ( ... ) | params_flow.rb:37:34:37:42 | call to taint | params_flow.rb:28:10:28:22 | ( ... ) | $@ | params_flow.rb:37:34:37:42 | call to taint | call to taint |
|
||||
| params_flow.rb:29:10:29:22 | ( ... ) | params_flow.rb:33:41:33:49 | call to taint | params_flow.rb:29:10:29:22 | ( ... ) | $@ | params_flow.rb:33:41:33:49 | call to taint | call to taint |
|
||||
| params_flow.rb:29:10:29:22 | ( ... ) | params_flow.rb:34:14:34:22 | call to taint | params_flow.rb:29:10:29:22 | ( ... ) | $@ | params_flow.rb:34:14:34:22 | call to taint | call to taint |
|
||||
| params_flow.rb:50:10:50:11 | p1 | params_flow.rb:54:9:54:17 | call to taint | params_flow.rb:50:10:50:11 | p1 | $@ | params_flow.rb:54:9:54:17 | call to taint | call to taint |
|
||||
| params_flow.rb:50:10:50:11 | p1 | params_flow.rb:57:9:57:17 | call to taint | params_flow.rb:50:10:50:11 | p1 | $@ | params_flow.rb:57:9:57:17 | call to taint | call to taint |
|
||||
| params_flow.rb:64:10:64:13 | ...[...] | params_flow.rb:62:8:62:16 | call to taint | params_flow.rb:64:10:64:13 | ...[...] | $@ | params_flow.rb:62:8:62:16 | call to taint | call to taint |
|
||||
| params_flow.rb:50:10:50:11 | p1 | params_flow.rb:55:9:55:17 | call to taint | params_flow.rb:50:10:50:11 | p1 | $@ | params_flow.rb:55:9:55:17 | call to taint | call to taint |
|
||||
| params_flow.rb:50:10:50:11 | p1 | params_flow.rb:58:9:58:17 | call to taint | params_flow.rb:50:10:50:11 | p1 | $@ | params_flow.rb:58:9:58:17 | call to taint | call to taint |
|
||||
| params_flow.rb:50:10:50:11 | p1 | params_flow.rb:60:9:60:17 | call to taint | params_flow.rb:50:10:50:11 | p1 | $@ | params_flow.rb:60:9:60:17 | call to taint | call to taint |
|
||||
| params_flow.rb:51:10:51:21 | ( ... ) | params_flow.rb:57:9:57:17 | call to taint | params_flow.rb:51:10:51:21 | ( ... ) | $@ | params_flow.rb:57:9:57:17 | call to taint | call to taint |
|
||||
| params_flow.rb:65:10:65:13 | ...[...] | params_flow.rb:63:8:63:16 | call to taint | params_flow.rb:65:10:65:13 | ...[...] | $@ | params_flow.rb:63:8:63:16 | call to taint | call to taint |
|
||||
| params_flow.rb:70:10:70:10 | x | params_flow.rb:78:10:78:18 | call to taint | params_flow.rb:70:10:70:10 | x | $@ | params_flow.rb:78:10:78:18 | call to taint | call to taint |
|
||||
| params_flow.rb:70:10:70:10 | x | params_flow.rb:81:10:81:18 | call to taint | params_flow.rb:70:10:70:10 | x | $@ | params_flow.rb:81:10:81:18 | call to taint | call to taint |
|
||||
| params_flow.rb:71:10:71:10 | y | params_flow.rb:78:21:78:29 | call to taint | params_flow.rb:71:10:71:10 | y | $@ | params_flow.rb:78:21:78:29 | call to taint | call to taint |
|
||||
| params_flow.rb:74:10:74:10 | w | params_flow.rb:78:43:78:51 | call to taint | params_flow.rb:74:10:74:10 | w | $@ | params_flow.rb:78:43:78:51 | call to taint | call to taint |
|
||||
| params_flow.rb:75:10:75:10 | r | params_flow.rb:78:54:78:62 | call to taint | params_flow.rb:75:10:75:10 | r | $@ | params_flow.rb:78:54:78:62 | call to taint | call to taint |
|
||||
| params_flow.rb:84:10:84:10 | t | params_flow.rb:94:10:94:18 | call to taint | params_flow.rb:84:10:84:10 | t | $@ | params_flow.rb:94:10:94:18 | call to taint | call to taint |
|
||||
| params_flow.rb:85:10:85:10 | u | params_flow.rb:94:21:94:29 | call to taint | params_flow.rb:85:10:85:10 | u | $@ | params_flow.rb:94:21:94:29 | call to taint | call to taint |
|
||||
| params_flow.rb:87:10:87:10 | w | params_flow.rb:94:39:94:47 | call to taint | params_flow.rb:87:10:87:10 | w | $@ | params_flow.rb:94:39:94:47 | call to taint | call to taint |
|
||||
|
||||
@@ -7,8 +7,8 @@ def sink x
|
||||
end
|
||||
|
||||
def positional(p1, p2)
|
||||
sink p1 # $ hasValueFlow=1 $ hasValueFlow=16 $ MISSING: hasValueFlow=18
|
||||
sink p2 # $ hasValueFlow=2 $ MISSING: hasValueFlow=17 $ MISSING: hasValueFlow=19
|
||||
sink p1 # $ hasValueFlow=1 $ hasValueFlow=16 $ hasValueFlow=18
|
||||
sink p2 # $ hasValueFlow=2 $ hasValueFlow=19 $ MISSING: hasValueFlow=17
|
||||
end
|
||||
|
||||
positional(taint(1), taint(2))
|
||||
@@ -47,8 +47,9 @@ args = [taint(18), taint(19)]
|
||||
positional(*args)
|
||||
|
||||
def posargs(p1, *posargs)
|
||||
sink p1 # $ hasValueFlow=20 $ hasValueFlow=23 $ MISSING: hasValueFlow=24
|
||||
sink (posargs[0]) # $ MISSING: hasValueFlow=21 $ MISSING: hasValueFlow=22 $ MISSING: hasValueFlow=25
|
||||
sink p1 # $ hasValueFlow=20 $ hasValueFlow=23 $ hasValueFlow=24
|
||||
sink (posargs[0]) # $ hasValueFlow=22 $ MISSING: hasValueFlow=21 $ MISSING: hasValueFlow=25
|
||||
sink (posargs[1])
|
||||
end
|
||||
|
||||
posargs(taint(20), taint(21))
|
||||
@@ -63,4 +64,31 @@ args = taint(26)
|
||||
def splatstuff(*x)
|
||||
sink x[0] # $ hasValueFlow=26
|
||||
end
|
||||
splatstuff(*args)
|
||||
splatstuff(*args)
|
||||
|
||||
def splatmid(x, y, *z, w, r)
|
||||
sink x # $ hasValueFlow=27 $ hasValueFlow=32
|
||||
sink y # $ hasValueFlow=28 $ MISSING: hasValueFlow=33
|
||||
sink z[0] # $ MISSING: hasValueFlow=29 $ MISSING: hasValueFlow=34
|
||||
sink z[1] # $ MISSING: hasValueFlow=35
|
||||
sink w # $ hasValueFlow=30 $ MISSING: hasValueFlow=36
|
||||
sink r # $ hasValueFlow=31 $ MISSING: hasValueFlow=37
|
||||
end
|
||||
|
||||
splatmid(taint(27), taint(28), taint(29), taint(30), taint(31))
|
||||
|
||||
args = [taint(33), taint(34), taint(35), taint(36)]
|
||||
splatmid(taint(32), *args, taint(37))
|
||||
|
||||
def pos_many(t, u, v, w, x, y, z)
|
||||
sink t # $ hasValueFlow=38
|
||||
sink u # $ hasValueFlow=39
|
||||
sink v # $ MISSING: hasValueFlow=40
|
||||
sink w # $ MISSING: hasValueFlow=41 $ SPURIOUS: hasValueFlow=44
|
||||
sink x # $ MISSING: hasValueFlow=42
|
||||
sink y # $ MISSING: hasValueFlow=43
|
||||
sink z # $ MISSING: hasValueFlow=44
|
||||
end
|
||||
|
||||
args = [taint(40), taint(41), taint(42), taint(43)]
|
||||
pos_many(taint(38), taint(39), *args, taint(44))
|
||||
@@ -7,6 +7,7 @@ track
|
||||
| type_tracker.rb:2:5:5:7 | field= | type tracker without call steps | type_tracker.rb:2:5:5:7 | field= |
|
||||
| type_tracker.rb:2:5:5:7 | self in field= | type tracker with call steps | type_tracker.rb:7:5:9:7 | self in field |
|
||||
| type_tracker.rb:2:5:5:7 | self in field= | type tracker without call steps | type_tracker.rb:2:5:5:7 | self in field= |
|
||||
| type_tracker.rb:2:5:5:7 | synthetic *args | type tracker without call steps | type_tracker.rb:2:5:5:7 | synthetic *args |
|
||||
| type_tracker.rb:2:16:2:18 | val | type tracker without call steps | type_tracker.rb:2:16:2:18 | val |
|
||||
| type_tracker.rb:2:16:2:18 | val | type tracker without call steps | type_tracker.rb:2:16:2:18 | val |
|
||||
| type_tracker.rb:2:16:2:18 | val | type tracker without call steps | type_tracker.rb:3:14:3:23 | call to field |
|
||||
@@ -46,6 +47,7 @@ track
|
||||
| type_tracker.rb:18:1:21:3 | &block | type tracker without call steps | type_tracker.rb:18:1:21:3 | &block |
|
||||
| type_tracker.rb:18:1:21:3 | positional | type tracker without call steps | type_tracker.rb:18:1:21:3 | positional |
|
||||
| type_tracker.rb:18:1:21:3 | self in positional | type tracker without call steps | type_tracker.rb:18:1:21:3 | self in positional |
|
||||
| type_tracker.rb:18:1:21:3 | synthetic *args | type tracker without call steps | type_tracker.rb:18:1:21:3 | synthetic *args |
|
||||
| type_tracker.rb:18:16:18:17 | p1 | type tracker without call steps | type_tracker.rb:18:16:18:17 | p1 |
|
||||
| type_tracker.rb:18:16:18:17 | p1 | type tracker without call steps | type_tracker.rb:18:16:18:17 | p1 |
|
||||
| type_tracker.rb:18:20:18:21 | p2 | type tracker without call steps | type_tracker.rb:18:20:18:21 | p2 |
|
||||
@@ -118,6 +120,7 @@ track
|
||||
| type_tracker.rb:32:26:32:26 | 8 | type tracker without call steps with content element :p1 | type_tracker.rb:32:1:32:27 | ** |
|
||||
| type_tracker.rb:34:1:53:3 | &block | type tracker without call steps | type_tracker.rb:34:1:53:3 | &block |
|
||||
| type_tracker.rb:34:1:53:3 | self in throughArray | type tracker without call steps | type_tracker.rb:34:1:53:3 | self in throughArray |
|
||||
| type_tracker.rb:34:1:53:3 | synthetic *args | type tracker without call steps | type_tracker.rb:34:1:53:3 | synthetic *args |
|
||||
| type_tracker.rb:34:1:53:3 | throughArray | type tracker without call steps | type_tracker.rb:34:1:53:3 | throughArray |
|
||||
| type_tracker.rb:34:18:34:20 | obj | type tracker without call steps | type_tracker.rb:34:18:34:20 | obj |
|
||||
| type_tracker.rb:34:18:34:20 | obj | type tracker without call steps | type_tracker.rb:34:18:34:20 | obj |
|
||||
@@ -272,6 +275,7 @@ trackEnd
|
||||
| type_tracker.rb:2:5:5:7 | self in field= | type_tracker.rb:7:5:9:7 | self (field) |
|
||||
| type_tracker.rb:2:5:5:7 | self in field= | type_tracker.rb:7:5:9:7 | self in field |
|
||||
| type_tracker.rb:2:5:5:7 | self in field= | type_tracker.rb:8:9:8:14 | self |
|
||||
| type_tracker.rb:2:5:5:7 | synthetic *args | type_tracker.rb:2:5:5:7 | synthetic *args |
|
||||
| type_tracker.rb:2:16:2:18 | val | type_tracker.rb:2:16:2:18 | val |
|
||||
| type_tracker.rb:2:16:2:18 | val | type_tracker.rb:2:16:2:18 | val |
|
||||
| type_tracker.rb:2:16:2:18 | val | type_tracker.rb:2:16:2:18 | val |
|
||||
@@ -340,6 +344,7 @@ trackEnd
|
||||
| type_tracker.rb:18:1:21:3 | self in positional | type_tracker.rb:18:1:21:3 | self in positional |
|
||||
| type_tracker.rb:18:1:21:3 | self in positional | type_tracker.rb:19:5:19:11 | self |
|
||||
| type_tracker.rb:18:1:21:3 | self in positional | type_tracker.rb:20:5:20:11 | self |
|
||||
| type_tracker.rb:18:1:21:3 | synthetic *args | type_tracker.rb:18:1:21:3 | synthetic *args |
|
||||
| type_tracker.rb:18:16:18:17 | p1 | type_tracker.rb:18:16:18:17 | p1 |
|
||||
| type_tracker.rb:18:16:18:17 | p1 | type_tracker.rb:18:16:18:17 | p1 |
|
||||
| type_tracker.rb:18:16:18:17 | p1 | type_tracker.rb:18:16:18:17 | p1 |
|
||||
@@ -427,6 +432,7 @@ trackEnd
|
||||
| type_tracker.rb:32:26:32:26 | 8 | type_tracker.rb:32:26:32:26 | 8 |
|
||||
| type_tracker.rb:34:1:53:3 | &block | type_tracker.rb:34:1:53:3 | &block |
|
||||
| type_tracker.rb:34:1:53:3 | self in throughArray | type_tracker.rb:34:1:53:3 | self in throughArray |
|
||||
| type_tracker.rb:34:1:53:3 | synthetic *args | type_tracker.rb:34:1:53:3 | synthetic *args |
|
||||
| type_tracker.rb:34:1:53:3 | throughArray | type_tracker.rb:34:1:53:3 | throughArray |
|
||||
| type_tracker.rb:34:18:34:20 | obj | type_tracker.rb:34:18:34:20 | obj |
|
||||
| type_tracker.rb:34:18:34:20 | obj | type_tracker.rb:34:18:34:20 | obj |
|
||||
|
||||
Reference in New Issue
Block a user