mrb_str_concat() may call VM resursively thus may reallocate VM stack; close #3000

61492744 · Yukihiro "Matz" Matsumoto · 57e30b3b · 61492744
Commit 61492744 authored Oct 27, 2015 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
@@ -2178,6 +2178,7 @@ RETRY_TRY_BLOCK:
    CASE(OP_STRCAT) {
      /* A B    R(A).concat(R(B)) */
      mrb_str_concat(mrb, regs[GETARG_A(i)], regs[GETARG_B(i)]);
+      regs = mrb->c->stack;
      NEXT;
    }