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Fix testsuite build for GCC 7 -Wformat-truncation.

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This patch fixes the glibc testsuite build for GCC 7
-Wformat-truncation, newly moved out of -Wformat-length and with some
further warnings that didn't previously appear.  Two tests that
previously disabled -Wformat-length are changed to disable
-Wformat-truncation instead; two others are made to disable that
option as well.

Tested (compilation only) with build-many-glibcs.py for aarch64 with
GCC mainline.

	* stdio-common/tst-printf.c [__GNUC_PREREQ (7, 0)]: Ignore
	-Wformat-truncation instead of -Wformat-length.
	* time/tst-strptime2.c (mkbuf) [__GNUC_PREREQ (7, 0)]: Likewise.
	* stdio-common/tstdiomisc.c (F): Ignore -Wformat-truncation for
	GCC 7.
	* wcsmbs/tst-wcstof.c: Include <libc-internal.h>.
	(do_test): Ignore -Wformat-truncation for GCC 7.
This commit is contained in:
Joseph Myers
2017-01-11 14:02:23 +00:00
parent 436cfba0ab
commit 3c9378265a
5 changed files with 30 additions and 3 deletions
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5
stdio-common/tst-printf.c
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@@ -33,8 +33,9 @@
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat");
#if __GNUC_PREREQ (7, 0)
/* Compiler warnings about format lengths should also be ignored. */
DIAG_IGNORE_NEEDS_COMMENT (7.0, "-Wformat-length");
/* Compiler warnings about snprintf output truncation should also be
ignored. */
DIAG_IGNORE_NEEDS_COMMENT (7.0, "-Wformat-truncation");
#endif
static void rfg1 (void);