1 files changed, 21 insertions, 4 deletions

diff --git a/src/lib/libc/stdlib/abort.c b/src/lib/libc/stdlib/abort.c
index c298e016b4..a833a1a8b7 100644
--- a/src/lib/libc/stdlib/abort.c
+++ b/src/lib/libc/stdlib/abort.c
@@ -32,26 +32,43 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-/*static char *sccsid = "from: @(#)abort.c      5.11 (Berkeley) 2/23/91";*/
-static char *rcsid = "$Id: abort.c,v 1.1.1.1 1995/10/18 08:42:16 deraadt Exp $";
+static char *rcsid = "$OpenBSD: abort.c,v 1.11 2002/11/05 22:19:55 marc Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <signal.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include "thread_private.h"
+#include "atexit.h"
 
 void
 abort()
 {
+        struct atexit *p = __atexit;
+        static int cleanup_called = 0;
         sigset_t mask;
 
+
         sigfillset(&mask);
         /*
          * don't block SIGABRT to give any handler a chance; we ignore
          * any errors -- X311J doesn't allow abort to return anyway.
          */
         sigdelset(&mask, SIGABRT);
-        (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+        (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+
+        /*
+         * POSIX requires we flush stdio buffers on abort
+         */
+        if (cleanup_called == 0) {
+                while (p != NULL && p->next != NULL)
+                        p = p->next;
+                if (p != NULL && p->fns[0] != NULL) {
+                        cleanup_called = 1;
+                        (*p->fns[0])();
+                }
+        }
+
         (void)kill(getpid(), SIGABRT);
 
         /*
@@ -59,7 +76,7 @@ abort()
          * it again, only harder.
          */
         (void)signal(SIGABRT, SIG_DFL);
-        (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+        (void)_thread_sys_sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
         (void)kill(getpid(), SIGABRT);
         exit(1);
 }