From 9651aeaf7862f6c1e161dcf23b4d506c103255bb Mon Sep 17 00:00:00 2001
From: Ilia Alshanetsky <iliaa@php.net>
Date: Sat, 24 Feb 2007 17:57:57 +0000
Subject: [PATCH] Pad to given length, not replace data with spaces

---
 ext/exif/exif.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ext/exif/exif.c b/ext/exif/exif.c
index ff98ad74756..2768e423136 100644
--- a/ext/exif/exif.c
+++ b/ext/exif/exif.c
@@ -1004,18 +1004,21 @@ static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type t
 			if (ret && len)  {
 				strlcpy(ret, tag_table[i].Desc, abs(len));
 				if (len < 0) {
-					memset(ret, ' ', -len - 1);
+					memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
+					ret[-len] = '\0';
 				}
 				return ret;
 			}
 			return tag_table[i].Desc;
 		}
 	}
+
 	if (ret && len) {
 		snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
 		strlcpy(ret, tmp, abs(len));
 		if (len < 0) {
-			memset(ret, ' ', -len - 1);
+			memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
+			ret[-len] = '\0';
 		}
 		return ret;
 	}