https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124563
Bug ID: 124563
Summary: Non-reserved names in ext/concurrence.h: wait and
wait_recursive
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
In ext/concurrence.h we have __gnu_cxx::__cond::wait and
__gnu_cxx::__cond::wait_recursive, which use non-reserved names.
That means we reject this valid program:
#define wait 1
#define wait_recursive 2
#include <memory>
int main() { }
$ g++ cond.cc
cond.cc:1:14: error: expected unqualified-id before numeric constant
1 | #define wait 1
| ^
cond.cc:2:24: error: expected unqualified-id before numeric constant
2 | #define wait_recursive 2
| ^
Nothing in our headers uses __cond, so we could just move it to a private
header in libsupc++ which is used by guard.cc and not installed.
