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-rw-r--r--signal/signal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/signal/signal.h b/signal/signal.h
index 8263d3a84f..ded9a81c0f 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -356,7 +356,7 @@ extern int sigaltstack (__const struct sigaltstack *__restrict __ss,
#endif /* use BSD or X/Open Unix. */
-#ifdef __USE_UNIX98
+#ifdef __USE_XOPEN_EXTENDED
/* Simplified interface for signal management. */
/* Add SIG to the calling process' signal mask. */