Jakub Jelinek 611fc65050 c++, libcpp: Implement CWG3053 ...

The following patch implements CWG3053 approved in Kona, where it is now
valid not just to #define likely(a) or #define unlikely(a, b, c) but also
to #undef likely or #undef unlikely.

2025-11-10  Jakub Jelinek  <jakub@redhat.com>

libcpp/
	* directives.cc: Implement CWG3053.
	(do_undef): Don't pedwarn or warn about #undef likely or #undef
	unlikely.
gcc/testsuite/
	* g++.dg/warn/Wkeyword-macro-4.C: Don't diagnose for #undef likely
	or #undef unlikely.
	* g++.dg/warn/Wkeyword-macro-5.C: Likewise.
	* g++.dg/warn/Wkeyword-macro-9.C: Likewise.
	* g++.dg/warn/Wkeyword-macro-8.C: Likewise.
	* g++.dg/warn/Wkeyword-macro-10.C: Likewise.

2025-11-10 11:34:20 +01:00

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