https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125510
Bug ID: 125510
Summary: no_sanitize_address on member function fails to
prevent sanitization
Product: gcc
Version: 16.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: services+gccbugs at vasama dot org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target Milestone: ---
This code reports a sanitizer failure despite the use of `no_sanitize_address`:
```
#include <sanitizer/asan_interface.h>
struct wrapper
{
long long x;
__attribute__((no_sanitize_address))
long long get() const
{
return x;
}
};
long long get_x(wrapper const& w)
{
return w.get();
}
volatile long long y;
int main()
{
wrapper w{y};
__asan_poison_memory_region(&w, sizeof(w));
long long l = get_x(w);
__asan_unpoison_memory_region(&w, sizeof(w));
return l;
}
```
Live reproducer on Compiler Explorer: https://godbolt.org/z/3fhdP1qWd
