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Merge pull request #7781 from hvitved/dataflow/summary-stack-bottom-less-nonlinear

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Data flow: Reduce non-linear recursion in `SummaryComponentStack::bottom`
This commit is contained in:
Tom Hvitved
2022-02-02 10:35:53 +01:00
committed by GitHub
parent d4c4e75bac 682163962a
commit 712418e5f8
3 changed files with 9 additions and 3 deletions
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4
csharp/ql/lib/semmle/code/csharp/dataflow/internal/FlowSummaryImpl.qll
View File

@@ -90,7 +90,9 @@ module Public {
predicate contains(SummaryComponent c) { c = this.drop(_).head() }
/** Gets the bottom element of this stack. */
SummaryComponent bottom() { result = this.drop(this.length() - 1).head() }
SummaryComponent bottom() {
this = TSingletonSummaryComponentStack(result) or result = this.tail().bottom()
}
/** Gets a textual representation of this stack. */
string toString() {

4
java/ql/lib/semmle/code/java/dataflow/internal/FlowSummaryImpl.qll
View File

@@ -90,7 +90,9 @@ module Public {
predicate contains(SummaryComponent c) { c = this.drop(_).head() }
/** Gets the bottom element of this stack. */
SummaryComponent bottom() { result = this.drop(this.length() - 1).head() }
SummaryComponent bottom() {
this = TSingletonSummaryComponentStack(result) or result = this.tail().bottom()
}
/** Gets a textual representation of this stack. */
string toString() {

4
ruby/ql/lib/codeql/ruby/dataflow/internal/FlowSummaryImpl.qll
View File

@@ -90,7 +90,9 @@ module Public {
predicate contains(SummaryComponent c) { c = this.drop(_).head() }
/** Gets the bottom element of this stack. */
SummaryComponent bottom() { result = this.drop(this.length() - 1).head() }
SummaryComponent bottom() {
this = TSingletonSummaryComponentStack(result) or result = this.tail().bottom()
}
/** Gets a textual representation of this stack. */
string toString() {