re PR preprocessor/27746 (ICE on openmp code when using _Pragma from macro)
PR preprocessor/27746
* directives.c (do_pragma): Handle pragma with valid namespace
and invalid name coming from macro expansion.
* directives.c (destringize_and_run): Initialize next field in
context.
PR c/27747
PR c++/27748
* directives.c (destringize_and_run): Set NO_EXPAND on the
tokens.
PR preprocessor/27746
* gcc.dg/gomp/macro-3.c: New test.
* gcc.dg/gomp/macro-4.c: New test.
* g++.dg/gomp/macro-3.C: New test.
* g++.dg/gomp/macro-4.C: New test.