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-rw-r--r--include/pthread.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/pthread.h b/include/pthread.h
index e15f25bb..76333669 100644
--- a/include/pthread.h
+++ b/include/pthread.h
@@ -181,9 +181,11 @@ int pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
 #include <bits/pthread.h>
 
 int __setjmp(void *);
+#ifndef __pthread_register_cancel
 void __pthread_register_cancel(struct __ptcb *);
 void __pthread_unregister_cancel(struct __ptcb *);
 void __pthread_unwind_next(struct __ptcb *);
+#endif
 
 #define pthread_cleanup_push(f, x) \
 do { struct __ptcb __cb; void (*__f)(void *) = (f); void *__x = (x); \