gcc/c-family/ChangeLog:

	PR c/80619
	* c-format.c (printf_length_specs): Set FMT_LEN_w for "w".
	(asm_fprintf_length_spec): Same.
	* c-format.h (format_lengths): Add FMT_LEN_w.

gcc/testsuite/ChangeLog:

	PR c/80619
	* gcc.dg/format/pr80619.c: New test.

From-SVN: r274385