[Bug preprocessor/7263] __extension__ keyword doesn't suppress warning on LL or ULL constants

[manu at gcc dot gnu dot org]

------- Comment #16 from manu at gcc dot gnu dot org  2008-08-18 13:55 -------
__extension__ now works for CPP warnings in the C front-end.

The issue with system headers is more difficult since it depends on having two
locations.

C++ lexes everything up front before parsing anything, so the warnings from CPP
are all emitted before any C++ warning and __extension__ are handled. I don't
see any easy fix to this (apart from moving pedantic CPP warnings to c-common.c
but that won't be trivial).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7263