https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120460
Bug ID: 120460
Summary: std::function ignores [[nodiscard]] attribute
Product: gcc
Version: 15.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: avi at scylladb dot com
Target Milestone: ---
Consider
```c++
#include <functional>
struct [[nodiscard]] A {};
A f();
std::function<void ()> ff(f);
void g() {
ff();
}
```
std::function calls f() (or rather, a function pointer that that returns an
A), but returns void. So somewhere, something should complain about the
nodiscard A being discarded. But it looks like it's explicitly silenced
somewhere, causing hard-to-find bugs.
