[clang] [clang][analyzer] Fix argument invalidations in StreamChecker. (PR #79470)

[Balazs Benics via cfe-commits]

================
@@ -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);
----------------
steakhal wrote:

Yup, have a look at `RegionStoreManager::invalidateRegions`. Depending on the nature of the call, invalidates system or every global variables.
We don't really care about it, so let's just not pass the `Call` here.

https://github.com/llvm/llvm-project/pull/79470