https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90400
--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> ---
The problem is that the pragma is not known/registered. In that case, when
calling
libcpp/directives.c's do_pragma, the result is p == NULL
and thus:
if (p)
...
else if (pfile->cb.def_pragma)
...
pfile->cb.def_pragma (pfile, pfile->directive_line);
the latter immediately prints the '#pragma ...'
I think what needs to be done is if (p == NULL && pfile->state.in_directive) to
create a new pragma on the fly and store it in pfile->directive_result to use
it later.
* * *
Side note: For 'gcc -E c-c++-common/gomp/pragma-1.c' the same issue occurs, but
if one adds -fopenmp, p != NULL and everything is fine.
