[Bug c++/126746] New: trivial_abi attribute class with just declared destructor erroneously destroyed twice

[ivan.lazaric.gcc at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126746

            Bug ID: 126746
           Summary: trivial_abi attribute class with just declared
                    destructor erroneously destroyed twice
           Product: gcc
           Version: 17.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ivan.lazaric.gcc at gmail dot com
  Target Milestone: ---

```cpp
#include <cstdio>

struct [[clang::trivial_abi]] A {
    A();
    ~A();
};

[[gnu::noinline]]
void consume(auto) {}

void use_A() { consume(A{}); }

int main() {
    use_A();
}

[[gnu::weak]]
A::~A(){
    puts("destroy");
}

[[gnu::weak]]
A::A(){
    puts("create");
}
```

Flags: "-std=c++26 -O3"

gcc emits destructor call in both callee and caller,
whereas clang only in callee

Running the program above, gcc emits:
```
create
destroy
destroy
```

clang emits:
```
create
destroy
```

https://godbolt.org/z/7MYxvMs4f