From: Mark Adler <madler@alumni.caltech.edu>
Date: Tue, 27 Sep 2011 01:20:32 +0000 (-0700)
Subject: Allow gzrewind() and gzseek() after a premature end-of-file.
X-Git-Tag: upstream/1.2.8~238
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=50e440f081a0edc293dcfe7333a91d764e3d15cd;p=platform%2Fupstream%2Fzlib.git

Allow gzrewind() and gzseek() after a premature end-of-file.
---

diff --git a/gzlib.c b/gzlib.c
index e8cb479..c59bcda 100644
--- a/gzlib.c
+++ b/gzlib.c
@@ -265,7 +265,8 @@ int ZEXPORT gzrewind(file)
     state = (gz_statep)file;
 
     /* check that we're reading and that there's no error */
-    if (state->mode != GZ_READ || state->err != Z_OK)
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
         return -1;
 
     /* back up and start over */
@@ -293,7 +294,7 @@ z_off64_t ZEXPORT gzseek64(file, offset, whence)
         return -1;
 
     /* check that there's no error */
-    if (state->err != Z_OK)
+    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
         return -1;
 
     /* can only seek from start or relative to current position */