The testcase crashed because in warn-spec-5_b.C we were writing
diagnostic classifications for pops but not for the things they were
ignoring. We should have been writing neither, as they all came from an
imported location, but linemap_location_from_module_p was returning
false for locations that originated from macros in a module.
PR c++/124466
libcpp/ChangeLog:
* line-map.cc (linemap_location_from_module_p): Resolve loc in
case it's a macro location.
gcc/testsuite/ChangeLog:
* g++.dg/modules/warn-spec-5_a.C: New test.
* g++.dg/modules/warn-spec-5_b.C: New test.
* g++.dg/modules/warn-spec-5_c.C: New test.
Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>
Reviewed-by: Jason Merrill <jason@redhat.com>