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authorZack Weinberg <zackw@panix.com>2017-04-03 08:45:41 -0400
committerZack Weinberg <zackw@panix.com>2017-04-07 07:52:29 -0400
commit0f3be8721a86299600eae2d266934f661bf7c990 (patch)
tree51085f8f01905cd53c041869b25ed3688ad59abd /libio/stdio.h
parentaeacb9f9127cff0ed099026156ca35c025f343b7 (diff)
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getopt: merge _GL_UNUSED annotations from gnulib
gnulib now has annotations on at least some functions to cater to
compilation with -Wunused-parameter.  In order to follow suit cleanly,
I've added to libc-symbols.h some of the _GL_* macros that
gnulib-common.m4 puts into config.h.  (I don't think they belong in
sys/cdefs.h, at least not without further thought.)

At this point all gnulib-side changes to getopt.c have been merged.

	* include/libc-symbols.h: For gnulib compatibility, define
	_GL_UNUSED, _GL_UNUSED_LABEL, _GL_ATTRIBUTE_PURE, and
	_GL_ATTRIBUTE_CONST.
	* posix/getopt.c (_getopt_initialize): Mark argc and argv
	parameters with _GL_UNUSED.
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