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swscale: Readd #define _SVID_SOURCE

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This was removed erroneously in
046f081b46. This define still is
necessary for getting MAP_ANONYMOUS defined on linux/glibc,
despite the define reshuffling done in that commit.

Without MAP_ANONYMOUS defined, the mprotect calls for setting the
generated mmx2 scaler code pages executable are left out, causing
crashes if that codepath is chosen.

This patch fixes scaling from 192x144 to 320x240 with
-sws_flags fast_bilinear, which crashes on linux at the
moment.

Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit f32dfad9dc)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
This commit is contained in:
Martin Storsjö
2011-11-25 00:45:16 +02:00
committed by Reinhard Tartler
parent ba4b08b789
commit 38a511e84c
1 changed files with 1 additions and 0 deletions
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libswscale/utils.c
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@@ -18,6 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _SVID_SOURCE //needed for MAP_ANONYMOUS
#include <inttypes.h>
#include <string.h>
#include <math.h>