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C++: Skip children we cannot translate when translating builtin operations.

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Mathias Vorreiter Pedersen
2024-06-06 09:48:41 +01:00
parent af4d2f1ed3
commit f58757ff9d
1 changed files with 10 additions and 6 deletions
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16
cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/internal/TranslatedExpr.qll
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@@ -3208,9 +3208,13 @@ class TranslatedBuiltInOperation extends TranslatedNonConstantExpr {
final override Instruction getResult() { result = this.getInstruction(OnlyInstructionTag()) } final override Instruction getResult() { result = this.getInstruction(OnlyInstructionTag()) }
private TranslatedElement getRankedChild(int rnk) {
result = rank[rnk + 1](int id, TranslatedElement te | te = this.getChild(id) | te order by id)
}
final override Instruction getFirstInstruction(EdgeKind kind) { final override Instruction getFirstInstruction(EdgeKind kind) {
if exists(this.getChild(0)) if exists(this.getRankedChild(0))
then result = this.getChild(0).getFirstInstruction(kind) then result = this.getRankedChild(0).getFirstInstruction(kind)
else ( else (
kind instanceof GotoEdge and result = this.getInstruction(OnlyInstructionTag()) kind instanceof GotoEdge and result = this.getInstruction(OnlyInstructionTag())
) )
@@ -3230,11 +3234,11 @@ class TranslatedBuiltInOperation extends TranslatedNonConstantExpr {
} }
final override Instruction getChildSuccessorInternal(TranslatedElement child, EdgeKind kind) { final override Instruction getChildSuccessorInternal(TranslatedElement child, EdgeKind kind) {
exists(int id | child = this.getChild(id) | exists(int id | child = this.getRankedChild(id) |
result = this.getChild(id + 1).getFirstInstruction(kind) result = this.getRankedChild(id + 1).getFirstInstruction(kind)
or or
kind instanceof GotoEdge and kind instanceof GotoEdge and
not exists(this.getChild(id + 1)) and not exists(this.getRankedChild(id + 1)) and
result = this.getInstruction(OnlyInstructionTag()) result = this.getInstruction(OnlyInstructionTag())
) )
} }
@@ -3249,7 +3253,7 @@ class TranslatedBuiltInOperation extends TranslatedNonConstantExpr {
tag = OnlyInstructionTag() and tag = OnlyInstructionTag() and
exists(int index | exists(int index |
operandTag = positionalArgumentOperand(index) and operandTag = positionalArgumentOperand(index) and
result = this.getChild(index).(TranslatedExpr).getResult() result = this.getRankedChild(index).(TranslatedExpr).getResult()
) )
} }