zlib: add CHECK to validate fast path input

mcollina · mcollina · commit c2aaa42bc28d · 2025-12-27T16:18:55.000+01:00
diff --git a/src/node_zlib.cc b/src/node_zlib.cc
@@ -1685,6 +1685,7 @@ static uint32_t FastCRC32(v8::Local<v8::Value> receiver,
                           v8::FastApiCallbackOptions& options) {
   TRACK_V8_FAST_API_CALL("zlib.crc32");
   v8::HandleScope handle_scope(options.isolate);
+  CHECK(data->IsArrayBufferView() || data->IsString());
   return CRC32Impl(options.isolate, data, value);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1685,6 +1685,7 @@ static uint32_t FastCRC32(v8::Local<v8::Value> receiver,`
`1685`	`1685`	`v8::FastApiCallbackOptions& options) {`
`1686`	`1686`	`TRACK_V8_FAST_API_CALL("zlib.crc32");`
`1687`	`1687`	`v8::HandleScope handle_scope(options.isolate);`
	`1688`	`+ CHECK(data->IsArrayBufferView() \|\| data->IsString());`
`1688`	`1689`	`return CRC32Impl(options.isolate, data, value);`
`1689`	`1690`	`}`
`1690`	`1691`