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Merge pull request #3897 from aibaars/util-objects

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Java: data flow for `java.util.Objects`
This commit is contained in:
Anders Schack-Mulligen
2020-07-08 15:07:50 +02:00
committed by GitHub
parent 528f250af3 72a24972e7
commit bf5c5297d3
5 changed files with 56 additions and 0 deletions
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13
java/ql/src/semmle/code/java/dataflow/internal/DataFlowUtil.qll
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@@ -400,6 +400,19 @@ predicate simpleLocalFlowStep(Node node1, Node node2) {
node2.asExpr().(ChooseExpr).getAResultExpr() = node1.asExpr()
or
node2.asExpr().(AssignExpr).getSource() = node1.asExpr()
or
exists(MethodAccess ma, Method m |
ma = node2.asExpr() and
m = ma.getMethod() and
m.getDeclaringType().hasQualifiedName("java.util", "Objects") and
(
m.hasName(["requireNonNull", "requireNonNullElseGet"]) and node1.asExpr() = ma.getArgument(0)
or
m.hasName("requireNonNullElse") and node1.asExpr() = ma.getAnArgument()
or
m.hasName("toString") and node1.asExpr() = ma.getArgument(1)
)
)
}
/**