From: Jim Meyering <jim@meyering.net>
Date: Mon, 18 Aug 1997 19:50:35 +0000 (+0000)
Subject: (show_date): Don't hang if strftime produces an empty string.
X-Git-Tag: SH-UTILS-1_16d~1
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=b5ef7a4be75e46cd44eb2f3cfa2512a84026ce98;p=thirdparty%2Fcoreutils.git

(show_date): Don't hang if strftime produces an empty string.
---

diff --git a/src/date.c b/src/date.c
index 36bc01febc..591264e5c8 100644
--- a/src/date.c
+++ b/src/date.c
@@ -399,8 +399,14 @@ show_date (const char *format, time_t when)
     {
       out_length += 200;
       out = (char *) xrealloc (out, out_length);
+
+      /* Mark the first byte of the buffer so we can detect the case
+	 of strftime producing an empty string.  Otherwise, this loop
+	 would not terminate when date was invoked like this
+	 `LANG=de date +%p' on a system with good language support.  */
+      out[0] = '\1';
     }
-  while (strftime (out, out_length, format, tm) == 0);
+  while (strftime (out, out_length, format, tm) == 0 && out[0] != '\0');
 
   printf ("%s\n", out);
   free (out);