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-rw-r--r--signal/signal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/signal/signal.h b/signal/signal.h
index 5e983e468e..c803a5bec4 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -352,6 +352,9 @@ extern int sigignore __P ((int __sig));
 extern __sighandler_t sigset __P ((int __sig, __sighandler_t __disp));
 #endif
 
+/* Some of the functions for handling signals in threaded programs must
+   be defined here.  */
+#include <bits/sigthread.h>
 
 /* The following functions are used internally in the C library and in
    other code which need deep insights.  */