lang/gcc12 lang/gcc12-devel lang/gcc13 lang/gcc13-devel lang/gcc14-devel: fix build without bootstrap
When more recent gcc ports are built without bootstrap, compiling libcc1
plugins results in errors similar to:
In file included from /wrkdirs/share/dim/ports/lang/gcc13/work/gcc-13.2.0/libcc1/libcc1plugin.cc:72:
In file included from /usr/include/c++/v1/vector:321:
In file included from /usr/include/c++/v1/__format/formatter_bool.h:20:
In file included from /usr/include/c++/v1/__format/formatter_integral.h:32:
/usr/include/c++/v1/locale:289:36: error: attempt to use a poisoned identifier
289 | __status = (unsigned char*)malloc(__nkw);
| ^
/usr/include/c++/v1/locale:1584:28: error: attempt to use a poisoned identifier
1584 | __ob = (char_type*)malloc(2*static_cast<size_t>(__nc)*sizeof(char_type));
| ^This is because gcc's own system.h header poisons these identifiers, and
the libcc1 plugins include <vector> after that. (Note that libstdc++ is
not affected because they seem to have implicitly included <vector>
already at that point.)
Fix it by telling system.h to include <vector> at the correct place, and
removing the explicit includes from libcc1plugin.cc and libcp1plugin.cc.
PR: 275748
MFH: 2023Q4