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Fix a warning on Linux caused by _BSD_SOURCE

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I got a warning while compiling under Ubuntu 18.04 and gcc 7.4:
"__BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"

Quote from the Linux Programmer's Manual:
"To allow code that requires _BSD_SOURCE in glibc 2.19 and earlier and
_DEFAULT_SOURCE in glibc 2.20 and later to compile without warnings,
define both _BSD_SOURCE and _DEFAULT_SOURCE."
This commit is contained in:
willson-chen 2019-07-30 16:01:13 +08:00 committed by Cosmin Truta
parent eb6767273a
commit 52ee167644
1 changed files with 1 additions and 0 deletions
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contrib/libtests/pngvalid.c
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@ -22,6 +22,7 @@
#define _ISOC99_SOURCE 1 /* For floating point */
#define _GNU_SOURCE 1 /* For the floating point exception extension */
#define _BSD_SOURCE 1 /* For the floating point exception extension */
#define _DEFAULT_SOURCE 1 /* For the floating point exception extension */
#include <signal.h>
#include <stdio.h>