Make sure we don't get stuck in a loop when trying to clean up stdio

1 files changed, 11 insertions, 6 deletions

diff --git a/src/lib/libc/stdlib/abort.c b/src/lib/libc/stdlib/abort.c
index 630f377f75..4ea8a2ca4b 100644
--- a/src/lib/libc/stdlib/abort.c
+++ b/src/lib/libc/stdlib/abort.c
@@ -32,7 +32,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char *rcsid = "$OpenBSD: abort.c,v 1.4 1996/10/25 07:06:37 downsj Exp $";
+static char *rcsid = "$OpenBSD: abort.c,v 1.5 1997/06/22 20:21:25 tholo Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <signal.h>
@@ -44,13 +44,9 @@ void (*__cleanup)();
 void
 abort()
 {
+        static int cleanup_called = 0;
         sigset_t mask;
 
-        /*
-         * POSIX requires we flush stdio buffers on abort
-         */
-        if (__cleanup)
-                (*__cleanup)();
 
         sigfillset(&mask);
         /*
@@ -59,6 +55,15 @@ abort()
          */
         sigdelset(&mask, SIGABRT);
         (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+
+        /*
+         * POSIX requires we flush stdio buffers on abort
+         */
+        if (cleanup_called == 0 && __cleanup != NULL) {
+                cleanup_called = 1;
+                (*__cleanup)();
+        }
+
         (void)kill(getpid(), SIGABRT);
 
         /*