Zlib patch: prevent uninitialized use of state->check

ClickHouse · Jun 20, 2024 · c19ba05 · c19ba05
1 parent 2512ec3
commit c19ba05
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/inflate.c b/inflate.c
@@ -1295,6 +1295,8 @@ int32_t Z_EXPORT PREFIX(inflateSync)(PREFIX3(stream) *strm) {
     /* return no joy or set up to restart inflate() on a new block */
     if (state->have != 4)
         return Z_DATA_ERROR;
+    if (state->mode == HEAD)
+        state->wrap = 0;
     if (state->flags == -1)
         state->wrap = 0;    /* if no header yet, treat as raw */
     else