C/C++: Better notification if misused a function like macro [PR102846]

C/C++: Better notification if misused a function like macro [PR102846]

Currently if assert is misused, e.g. like passing to a function like a
function pointer, GCC suggests to include assert.h/cassert. But since
it is already included that is just a bogus suggestion. Instead we should
see if a function-like macro is that same name (in the case of assert it will be),
and inform the user that it is being mis-used.

	PR c++/102846
	PR c/102846

gcc/c-family/ChangeLog:

	* known-headers.cc (macro_like_function_used::macro_like_function_used): New.
	(macro_like_function_used::~macro_like_function_used): New.
	* known-headers.h (class macro_like_function_used): New class.

gcc/c/ChangeLog:

	* c-decl.cc (lookup_name_fuzzy): Lookup function-like macro and
	notify of misuse there.

gcc/cp/ChangeLog:

	* name-lookup.cc (lookup_name_fuzzy): Lookup function-like macro and
	notify of misuse there.

gcc/testsuite/ChangeLog:

	* c-c++-common/function-like-macro-1.c: New test.
	* c-c++-common/function-like-macro-2.c: New test.

Signed-off-by: Andrew Pinski <andrew.pinski@oss.qualcomm.com>