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C++: Restrict the side effect of StoreChainEndInstructionSideEffect to be WriteSideEffectInstructions

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This commit is contained in:
Mathias Vorreiter Pedersen
2020-06-03 09:28:06 +02:00
parent ce34d91a07
commit b890b162f4
1 changed files with 2 additions and 2 deletions
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4
cpp/ql/src/semmle/code/cpp/ir/dataflow/internal/DataFlowUtil.qll
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@@ -435,13 +435,13 @@ private Instruction skipConversion(Instruction instr) {
* before entering `setter`.
*/
private class StoreChainEndInstructionSideEffect extends StoreChainEndInstruction, ChiInstruction {
SideEffectInstruction sideEffect;
WriteSideEffectInstruction sideEffect;
FieldAddressInstruction fi;
StoreChainEndInstructionSideEffect() {
not this.isResultConflated() and
this.getPartial() = sideEffect and
fi = skipConversion*(sideEffect.getAnOperand().getDef())
fi = skipConversion*(sideEffect.getArgumentDef())
}
override FieldAddressInstruction getFieldInstruction() { result = fi }