================
@@ -21,16 +21,67 @@
#include "clang/StaticAnalyzer/Core/PathSensitive/CallDescription.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerHelpers.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/DynamicExtent.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/SVals.h"
using namespace clang;
using namespace ento;
namespace {
+QualType getOverflowBuiltinResultType(const CallEvent &Call) {
+ assert(Call.getNumArgs() == 3);
+
+ return Call.getArgExpr(2)->getType()->getPointeeType();
+}
+
+QualType getOverflowBuiltinResultType(const CallEvent &Call, CheckerContext &C,
+ unsigned BI) {
----------------
steakhal wrote:
Have you considered using
`cast<FunctionDecl>(Call.getDecl())->getParamDecl(2)->getType()` as a type?
Is it because its not always present in the declaration of the builting?
`__builtin_mul_overflow`
In that case you could take the
`Call.getArgExpr(2)->getType()->getPointeeType()` I think.
https://github.com/llvm/llvm-project/pull/102602
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