Paul Eggert wrote: > Unfortunately the test fails on Ubuntu 20.10 (and I assume on other > GNU/Linux hosts).
And although the test fails, GCC makes optimizations that assume that
free() preserves errno. In particular, when you write
int saved_errno = errno;
free (ptr);
errno = saved_errno;
GCC may transform this to just
free (ptr);
Reported at <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98396> .
Bruno
