panic: unreachable: 20(*types.Struct) when returns closure in closure

[cpunion]

package main

func main() {
	x := 1
	f := func(i int) func(int) {
		return func(i int) {
			println("closure", i, x)
		}
	}
	f(1)(2)
}

Compile:

go run ./cmd/llgo run ./a.go
2024/11/12 11:07:35 unreachable: 20(*types.Struct)
panic: unreachable: 20(*types.Struct)


goroutine 1 [running]:
log.Panicf({0x104dc64db?, 0x104eb24a0?}, {0x14004bbef98?, 0x14001788c80?, 0x10c8fd518?})
	/Users/lijie/.version-fox/temp/1730649600-834/golang/src/log/log.go:391 +0x68
github.com/goplus/llgo/ssa.(*aBuilder).Call(0x14001788c80, {{0x1?}, 0x14002229f80?}, {0x140014499f0, 0x1, 0x1})
	/Users/lijie/source/goplus/llgo/ssa/expr.go:985 +0x190
github.com/goplus/llgo/ssa.(*aBuilder).Do(0x1400142c8f0?, 0x10ca2fba8?, {{0x14000d89020?}, 0x14002229f80?}, {0x140014499f0?, 0x0?, 0x14001f423f0?})
	/Users/lijie/source/goplus/llgo/ssa/expr.go:1024 +0x78
github.com/goplus/llgo/cl.(*context).call(0x1400142c8f0, 0x14001788c80, 0x14002229d00?, 0x1400132a8c0)
	/Users/lijie/source/goplus/llgo/cl/instr.go:416 +0x788
github.com/goplus/llgo/cl.(*context).compileInstrOrValue(0x1400142c8f0, 0x14001788c80, {0x104ee7c58?, 0x1400132a880?}, 0x40?)
	/Users/lijie/source/goplus/llgo/cl/compile.go:534 +0x104
github.com/goplus/llgo/cl.(*context).compileInstr(0x1400142c8f0, 0x14001f1d290?, {0x104ee5898?, 0x1400132a880?})
	/Users/lijie/source/goplus/llgo/cl/compile.go:709 +0x638
github.com/goplus/llgo/cl.(*context).compileBlock(0x1400142c8f0, 0x14001788c80, 0x14001b6f970, 0x0, 0x1, 0x0)
	/Users/lijie/source/goplus/llgo/cl/compile.go:390 +0x414
github.com/goplus/llgo/cl.(*context).compileFuncDecl.func1()
	/Users/lijie/source/goplus/llgo/cl/compile.go:281 +0x404
github.com/goplus/llgo/cl.NewPackageEx(0x14000204000, 0x14001f01890, 0x14000d44000, {0x140002821a8, 0x1, 0x1})
	/Users/lijie/source/goplus/llgo/cl/compile.go:956 +0x6b8
github.com/goplus/llgo/internal/build.buildPkg(0x14002397560, 0x14002229860, 0x0)
	/Users/lijie/source/goplus/llgo/internal/build/build.go:506 +0x2bc
github.com/goplus/llgo/internal/build.buildAllPkgs(0x14002397560, {0x140002822b0?, 0x14000030600?, 0x104dbf764?}, 0x0?)
	/Users/lijie/source/goplus/llgo/internal/build/build.go:340 +0x360
github.com/goplus/llgo/internal/build.Do({0x1400019c1a0?, 0x1?, 0x1?}, 0x140001b85a0)
	/Users/lijie/source/goplus/llgo/internal/build/build.go:205 +0xa6c
github.com/goplus/llgo/cmd/internal/run.runCmdEx(0x104dd2085?, {0x1400019c1a0, 0x1, 0x1}, 0x2)
	/Users/lijie/source/goplus/llgo/cmd/internal/run/run.go:66 +0x12c
github.com/goplus/llgo/cmd/internal/run.runCmd(0x140001b8120?, {0x1400019c1a0?, 0x140000566e8?, 0x104b00794?})
	/Users/lijie/source/goplus/llgo/cmd/internal/run/run.go:50 +0x24
main.main()
	/Users/lijie/source/goplus/llgo/cmd/llgo/llgo.go:90 +0x4c8
exit status 2