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Need to clear stack before invoking a block; fix #4181

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2018-12-10 10:23:01 +09:00
parent e6bad6766a
commit c23e68d32b
1 changed files with 3 additions and 2 deletions
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src/vm.c
+3 -2
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@@ -667,10 +667,11 @@ eval_under(mrb_state *mrb, mrb_value self, mrb_value blk, struct RClass *c)
return MRB_PROC_CFUNC(p)(mrb, self);
}
nregs = p->body.irep->nregs;
mrb_stack_extend(mrb, (nregs < 3) ? 3 : nregs);
if (nregs < 3) nregs = 3;
mrb_stack_extend(mrb, nregs);
mrb->c->stack[0] = self;
mrb->c->stack[1] = self;
mrb->c->stack[2] = mrb_nil_value();
stack_clear(mrb->c->stack+2, nregs-2);
ci = cipush(mrb);
ci->target_class = 0;
ci->pc = p->body.irep->iseq;