https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107597
--- Comment #3 from Christoph Steefel <cfsteefel at arista dot com> ---
Address sanitizer is the one that flags it.
This is the code I used to reproduce the failure.
test.h:
class NonTemplated {
static inline int x;
public:
void doFoo() {
x++;
}
};
int foo();
int bar();
test1.cpp:
#include "test.h"
int foo() {
NonTemplated n;
n.doFoo();
return 1;
}
test2.cpp:
#include "test.h"
int bar() {
NonTemplated n;
n.doFoo();
return 1;
}
main.cpp:
#include "test.h"
int main(){
foo();
bar();
return 0;
}
> g++ -shared -o libTest1.so -flto -fsemantic-interposition -fPIC test1.cpp
> -fsanitize=address
> g++ -shared -o libTest2.so -flto -fsemantic-interposition -fPIC test2.cpp
> -fsanitize=address
> g++ -shared -o libMain.so -flto -fsemantic-interposition -fPIC main.cpp
> -fsanitize=address
> g++ libMain.so libTest1.so libTest2.so -fsanitize=address
> LD_LIBRARY_PATH=. ./a.out
=================================================================
==9794==ERROR: AddressSanitizer: odr-violation (0x7f6340a3d0e0):
[1] size=4 'x' test.h:2:22
[2] size=4 'x' test.h:2:22
... (backtrace elided)
My general understanding is that address sanitizer doesn't instrument weak or
unique symbols, but will clearly instrument the non-weak symbol here.
