[Bug c++/90473] New: gcc does not call function in comma operator

[tiagomacarios at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90473

            Bug ID: 90473
           Summary: gcc does not call function in comma operator
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tiagomacarios at gmail dot com
  Target Milestone: ---

In the code below gcc should call f() prios to calling b(), but that does not
happen.

https://godbolt.org/z/e245vi

void f();

void b(void* p = (f(), nullptr));

void z()
{
    b();
}