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-rw-r--r--bits/sigstack.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/bits/sigstack.h b/bits/sigstack.h
index b4b911e7d1..62020b396e 100644
--- a/bits/sigstack.h
+++ b/bits/sigstack.h
@@ -16,7 +16,10 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _SIGNAL_H
+#ifndef _BITS_SIGSTACK_H
+#define _BITS_SIGSTACK_H 1
+
+#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
 # error "Never include this file directly.  Use <signal.h> instead"
 #endif
 
@@ -52,3 +55,5 @@ enum
 
 /* System default stack size.  */
 #define SIGSTKSZ	(MINSIGSTKSZ + 32768)
+
+#endif /* bits/sigstack.h */