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-rw-r--r--libiberty/sigsetmask.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/libiberty/sigsetmask.c b/libiberty/sigsetmask.c
index 3b708b16adb..f7a24246d1f 100644
--- a/libiberty/sigsetmask.c
+++ b/libiberty/sigsetmask.c
@@ -15,7 +15,6 @@ be the value @code{1}).
*/
-#define _POSIX_SOURCE
#include <ansidecl.h>
/* Including <sys/types.h> seems to be needed by ISC. */
#include <sys/types.h>