In commit 35acaa90c5 (bzip2: Add compilation flags to disable warnings in third-party code, 2020-02-24) we forgot to disable warnings for MSVC.
@@ -32,7 +32,9 @@
#include "bzlib.h"
-
+#if defined(_MSC_VER)
+# pragma warning(push,1)
+#endif
/*-- General stuff. --*/