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-rw-r--r--string/strerror.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/string/strerror.c b/string/strerror.c
index 8a54a38ee0..5d829d0bf0 100644
--- a/string/strerror.c
+++ b/string/strerror.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 93, 94, 95, 96, 98 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 93, 94, 95, 96, 98, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,16 +16,30 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <libintl.h>
 #include <stdio.h>
 #include <string.h>
+#include <errno.h>
 
 /* Return a string describing the errno code in ERRNUM.
    The storage is good only until the next call to strerror.
    Writing to the storage causes undefined behavior.  */
+libc_freeres_ptr (static char *buf);
+
 char *
 strerror (errnum)
      int errnum;
 {
-  static char buf[1024];
-  return __strerror_r (errnum, buf, sizeof buf);
+  char *ret = __strerror_r (errnum, NULL, 0);
+  int saved_errno;
+
+  if (__builtin_expect (ret != NULL, 1))
+    return ret;
+  saved_errno = errno;
+  if (buf == NULL)
+    buf = malloc (1024);
+  __set_errno (saved_errno);
+  if (buf == NULL)
+    return _("Unknown error");
+  return __strerror_r (errnum, buf, 1024);
 }