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feat: 异常与 return 穿越释放资源，dispose_count 门控

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彭俊皓
2026-10-09 19:14:36 +00:00
parent 48ffb54c4f
commit ae73fb8da5
20 changed files with 264 additions and 152 deletions
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crates/oxide_emit/src/function_body.rs
+3 -3
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@@ -509,18 +509,18 @@ impl Emitter {
}
if is_expression_body {
if let Some(reg) = last_result_reg {
ctx.inst(Inst::ret(Operand::Reg(reg), 0, 0));
ctx.inst(Inst::ret(Operand::Reg(reg), 0, 0, 0));
} else {
let undef_idx = ctx.add_constant(Constant::Undefined);
let undef_reg = ctx.alloc_reg();
ctx.inst(Inst::load_const(Operand::Reg(undef_reg), undef_idx));
ctx.inst(Inst::ret(Operand::Reg(undef_reg), 0, 0));
ctx.inst(Inst::ret(Operand::Reg(undef_reg), 0, 0, 0));
}
} else {
let undef_idx = ctx.add_constant(Constant::Undefined);
let undef_reg = ctx.alloc_reg();
ctx.inst(Inst::load_const(Operand::Reg(undef_reg), undef_idx));
ctx.inst(Inst::ret(Operand::Reg(undef_reg), 0, 0));
ctx.inst(Inst::ret(Operand::Reg(undef_reg), 0, 0, 0));
}
// 调用契约参数段只含固定形参：rest 是函数体内普通变量，不在 VM 实参传递区。