https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113960
Bug ID: 113960
Summary: std::map with std::vector as input overwrites itself
with c++20, on s390x platform
Product: gcc
Version: 13.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: miladfarca at gmail dot com
Target Milestone: ---
Host: s390x
Target: s390x
```
#include <map>
#include <vector>
#include <iostream>
int main(){
std::vector<unsigned short> v1 = {1};
std::vector<unsigned short> v2 = {2};
std::map<std::vector<unsigned short>, int> m;
m[v1] = 1;
m[v2] = 2; // this overwrites m[v1]
std::cout << m.size() << std::endl; // prints 1, should be 2
return 0;
}
```
Compile with `g++ std=c++20`. Output is correct with c++17. Tested on g++
12.2.1 and g++ 13.2.1
