* time.c (rb_strftime): check whether strftime returns empty string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1285 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/time.c b/time.c
index a06f1abf2a..150df2da2f 100644
--- a/time.c
+++ b/time.c
@@ -893,7 +893,7 @@ rb_strftime(buf, format, time)
 	return 0;
     }
     len = strftime(*buf, SMALLBUF, format, time);
-    if (len != 0) return len;
+    if (len != 0 || **buf == '\0') return len;
     for (size=1024; ; size*=2) {
 	*buf = xmalloc(size);
 	(*buf)[0] = '\0';