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-rw-r--r--stdlib/stdlib.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index 5c0c982ccf..ad9c6c8904 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -337,7 +337,7 @@ extern int rand (void) __THROW;
 extern void srand (unsigned int __seed) __THROW;
 __END_NAMESPACE_STD
 
-#ifdef __USE_POSIX
+#ifdef __USE_POSIX199506
 /* Reentrant interface according to POSIX.1.  */
 extern int rand_r (unsigned int *__seed) __THROW;
 #endif