https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94064
Bug ID: 94064
Summary: 00 vs O1/O2/O3 different output
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: paul.hua.gm at gmail dot com
Target Milestone: ---
#include <stdio.h>
#include <new>
class A {
public:
A() {};
int m;
};
int main() {
A* src = new A;
src->m = 10;
A* src_p = new(src) A;
printf("%d\n", src->m);
}
g++ foo.cpp -O3 -o 3
./3 >> 0
g++ foo.cpp -O0 -o 0
./0 >> 10
