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Fix OP_DEBUG operand type and add NULL check for debug_op_hook #6714

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Merged
matz merged 1 commit into from
Feb 7, 2026
+2 −5
Merged

Fix OP_DEBUG operand type and add NULL check for debug_op_hook #6714

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7 changes: 2 additions & 5 deletions src/vm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3319,12 +3319,9 @@ mrb_vm_exec(mrb_state *mrb, const struct RProc *begin_proc, const mrb_code *iseq
NEXT;
}

CASE(OP_DEBUG, Z) {
const mrb_code *pc = ci->pc;
FETCH_BBB();
ci->pc = pc;
CASE(OP_DEBUG, BBB) {
#ifdef MRB_USE_DEBUG_HOOK
mrb->debug_op_hook(mrb, irep, ci->pc, regs);
if (mrb->debug_op_hook) mrb->debug_op_hook(mrb, irep, ci->pc, regs);
#else
#ifndef MRB_NO_STDIO
printf("OP_DEBUG %d %d %d\n", a, b, c);
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