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-rw-r--r--ext/zlib/zlib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index a9863152f7..8d0005592a 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -400,7 +400,7 @@ retry_raw_inflate:
status = inflateInit2(&Z, encoding);
if (Z_OK == status) {
Z.next_in = (Bytef *) in_buf;
- Z.avail_in = in_len;
+ Z.avail_in = in_len + 1; /* NOTE: data must be zero terminated */
switch (status = php_zlib_inflate_rounds(&Z, max_len, out_buf, out_len)) {
case Z_STREAM_END: