https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86329
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed on trunk, gcc-8, and gcc-7.
Doesn't affect gcc-6.
The bogus dotted names are coming from anonymous enums in the header; a more
minimal reproducer is:
enum {};
int test()
{
return __0;
}
pr86329.C: In function ‘int test()’:
pr86329.C:5:10: error: ‘__0’ was not declared in this scope
return __0;
^~~
pr86329.C:5:10: note: suggested alternative: ‘._0’
return __0;
^~~
._0
I'm working on a fix.
