================
@@ -544,6 +545,21 @@ const ExplodedNode
*StreamChecker::getAcquisitionSite(const ExplodedNode *N,
return nullptr;
}
+static ProgramStateRef
+escapeArgs(ProgramStateRef State, CheckerContext &C, const CallEvent &Call,
+ const SmallVector<unsigned int> &EscapingArgs) {
+ const auto *CE = Call.getOriginExpr();
+
+ SmallVector<SVal> EscapingVals;
+ EscapingVals.reserve(EscapingArgs.size());
+ for (auto EscArgIdx : EscapingArgs)
+ EscapingVals.push_back(Call.getArgSVal(EscArgIdx));
+ State = State->invalidateRegions(EscapingVals, CE, C.blockCount(),
+ C.getLocationContext(),
+ /*CausesPointerEscape=*/false);
----------------
balazske wrote:
If this change is made, a error shows up in **stream-errno.c** line 190
(unexpected warning: FALSE).
```
int Ret = fgetpos(F, &Pos);
if (Ret)
clang_analyzer_eval(errno != 0); // expected-warning{{TRUE}}
else
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}} we get FALSE
too
```
Probably the `errno` is invalidated somehow, this is likely to be caused by the
`Call` argument. Without these additional arguments to `invalidateRegions` the
test passes.
https://github.com/llvm/llvm-project/pull/79470
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