vm.c: check object type before concatenating strings.

903c5f97 · Yukihiro "Matz" Matsumoto · ae3c9976 · 903c5f97
Unverified Commit 903c5f97 authored Feb 03, 2022 by Yukihiro "Matz" Matsumoto
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src/vm.c src/vm.c +1 -0

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--- a/src/vm.c
+++ b/src/vm.c
@@ -2756,6 +2756,7 @@ RETRY_TRY_BLOCK:
    }
    CASE(OP_STRCAT, B) {
+      mrb_ensure_string_type(mrb, regs[a]);
      mrb_str_concat(mrb, regs[a], regs[a+1]);
      NEXT;
    }