PR c/71858
	* c-decl.c (lookup_name_fuzzy): Ignore binding->invisible.

	* gcc.dg/spellcheck-identifiers.c (snprintf): Declare.
	* gcc.dg/spellcheck-identifiers-2.c: New test.
	* gcc.dg/diagnostic-token-ranges.c (nanl): Declare.
	* c-c++-common/attributes-1.c: Adjust dg-prune-output.

From-SVN: r238352