X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=gzlib.c;h=ced2cb8ba74096377051f98892479ee95b537c73;hb=72c70060d8312cff06754779188d8adeb974f18c;hp=fae202ef8905a3c99e4b71d756a45d55f9b1c163;hpb=0b166094092efa2b92200cbb67f390e86c181ab4;p=zlib.git

diff --git a/gzlib.c b/gzlib.c
index fae202e..ced2cb8 100644
--- a/gzlib.c
+++ b/gzlib.c
@@ -248,8 +248,10 @@ local gzFile gz_open(path, fd, mode)
         free(state);
         return NULL;
     }
-    if (state->mode == GZ_APPEND)
+    if (state->mode == GZ_APPEND) {
+        LSEEK(state->fd, 0, SEEK_END);  /* so gzoffset() is correct */
         state->mode = GZ_WRITE;         /* simplify later checks */
+    }
 
     /* save the current position for rewinding (only if reading) */
     if (state->mode == GZ_READ) {