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-rw-r--r--ext/zlib/zlib.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index d195597b13..ff68743ccd 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -644,6 +644,7 @@ static int php_do_deflate(uint str_length, Bytef **p_buffer, uint *p_buffer_len,
if (do_end) {
err = deflate(&ZLIBG(stream), Z_FINISH);
+ buffer[outlen - ZLIBG(stream).avail_out] = '\0';
}
*p_buffer = buffer;