Fix read out of bounds with empty file (terralang#665)

StanfordLegion · Jun 20, 2024 · 5754074 · 5754074
1 parent dff6c92
commit 5754074
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/lparser.cpp b/src/lparser.cpp
@@ -2326,8 +2326,8 @@ int luaY_parser(terra_State *T, ZIO *z, const char *name, int firstchar) {
                lexstate.output_buffer.data);
     }
     // loadbuffer doesn't like null terminators, so rewind to before them
-    while (lexstate.output_buffer.data[lexstate.output_buffer.N - 1] == '\0' &&
-           lexstate.output_buffer.N > 0) {
+    while (lexstate.output_buffer.N > 0 &&
+           lexstate.output_buffer.data[lexstate.output_buffer.N - 1] == '\0') {
         lexstate.output_buffer.N--;
     }