Floating deadlock in errors_must e2e

[emil14]

Trace:

sent | must_handle/handler/__new__1:res | "Hello, io.WriteAll!"
sent | :start | {}
recv | __newv2__1:sig | {}
sent | __newv2__1:res | "create_me.txt"
recv | must_handle/handler/write_all:filename | "create_me.txt"
recv | must_handle/handler/write_all:data | "Hello, io.WriteAll!"
sent | must_handle/handler/__new__1:res | "Hello, io.WriteAll!"
sent | must_handle/handler/write_all:res | {}
recv | must_handle/handler/__del__:data | {}

Stdout:

neva run -trace e2e/errors_must/main
fatal error: all goroutines are asleep - deadlock!

goroutine 1 [chan receive]:
github.com/nevalang/neva/internal/runtime.Run({0x10307adb0?, 0x103298fa0?}, {0x1400012c200, 0x1400012c240, {0x14000174000, 0x7, 0x7}}, 0x14000124e10)
        /Users/emil/projects/neva/tmp/runtime/runtime.go:43 +0x230
main.main()
        /Users/emil/projects/neva/tmp/main.go:144 +0x10e0

goroutine 35 [select]:
github.com/nevalang/neva/internal/runtime.SingleInport.Receive({0x1400010a1c0, {{0x102f592eb, 0x3}, {0x102f59462, 0x4}}, {0x103079760, 0x1400011c038}}, {0x10307ae58?, 0x1400017c000?})
        /Users/emil/projects/neva/tmp/runtime/program.go:94 +0x8c
github.com/nevalang/neva/internal/runtime.Run.func1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:21 +0x74
created by github.com/nevalang/neva/internal/runtime.Run in goroutine 1
        /Users/emil/projects/neva/tmp/runtime/runtime.go:20 +0xe8

goroutine 36 [semacquire]:
sync.runtime_Semacquire(0x1400012a540?)
        /opt/homebrew/Cellar/go/1.23.6/libexec/src/runtime/sema.go:71 +0x2c
sync.(*WaitGroup).Wait(0x1400000e110)
        /opt/homebrew/Cellar/go/1.23.6/libexec/src/sync/waitgroup.go:118 +0x74
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/runtime.go:67 +0xe8
github.com/nevalang/neva/internal/runtime.Run.func2()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:34 +0x5c
created by github.com/nevalang/neva/internal/runtime.Run in goroutine 1
        /Users/emil/projects/neva/tmp/runtime/runtime.go:32 +0x190

goroutine 4 [select]:
github.com/nevalang/neva/internal/runtime.SingleInport.Receive({0x1400010a150, {{0x102f5bac2, 0xd}, {0x102f592ee, 0x3}}, {0x103079760, 0x1400011c038}}, {0x10307ae20?, 0x14000200000?})
        /Users/emil/projects/neva/tmp/runtime/program.go:94 +0x8c
github.com/nevalang/neva/internal/runtime/funcs.newV2.Create.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/funcs/new_v2.go:24 +0x74
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1.1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:63 +0x34
created by github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1 in goroutine 36
        /Users/emil/projects/neva/tmp/runtime/runtime.go:62 +0x68

goroutine 5 [select]:
github.com/nevalang/neva/internal/runtime.SingleInport.Receive({0x1400010a3f0, {{0x102f5aa70, 0xa}, {0x102f59466, 0x4}}, {0x103079760, 0x1400011c038}}, {0x10307ae20?, 0x14000200000?})
        /Users/emil/projects/neva/tmp/runtime/program.go:94 +0x8c
github.com/nevalang/neva/internal/runtime/funcs.println.Create.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/funcs/println.go:25 +0x68
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1.1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:63 +0x34
created by github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1 in goroutine 36
        /Users/emil/projects/neva/tmp/runtime/runtime.go:62 +0x68

goroutine 6 [select]:
github.com/nevalang/neva/internal/runtime.SingleInport.Receive({0x1400010a2a0, {{0x102f63e86, 0x20}, {0x102f5a06c, 0x8}}, {0x103079760, 0x1400011c038}}, {0x10307ae20?, 0x14000200000?})
        /Users/emil/projects/neva/tmp/runtime/program.go:94 +0x8c
github.com/nevalang/neva/internal/runtime/funcs.writeAll.Create.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/funcs/write_all.go:35 +0x6c
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1.1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:63 +0x34
created by github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1 in goroutine 36
        /Users/emil/projects/neva/tmp/runtime/runtime.go:62 +0x68

goroutine 7 [select]:
github.com/nevalang/neva/internal/runtime.SingleOutport.Send({{{0x102f63ea6, 0x20}, {0x102f592f1, 0x3}}, {0x103079760, 0x1400011c038}, 0x1400010a380}, {0x10307ae20, 0x14000200000}, {0x10307c8e0?, ...})
        /Users/emil/projects/neva/tmp/runtime/program.go:375 +0x118
github.com/nevalang/neva/internal/runtime/funcs.new.Create.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/funcs/new.go:19 +0x7c
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1.1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:63 +0x34
created by github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1 in goroutine 36
        /Users/emil/projects/neva/tmp/runtime/runtime.go:62 +0x68

goroutine 8 [select]:
github.com/nevalang/neva/internal/runtime.SingleInport.Receive({0x1400010a310, {{0x102f62fa2, 0x1e}, {0x102f59466, 0x4}}, {0x103079760, 0x1400011c038}}, {0x10307ae20?, 0x14000200000?})
        /Users/emil/projects/neva/tmp/runtime/program.go:94 +0x8c
github.com/nevalang/neva/internal/runtime/funcs.del.Create.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/funcs/del.go:19 +0x64
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1.1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:63 +0x34
created by github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1 in goroutine 36
        /Users/emil/projects/neva/tmp/runtime/runtime.go:62 +0x68

goroutine 9 [select]:
github.com/nevalang/neva/internal/runtime.SingleInport.Receive({0x1400010a460, {{0x102f5e5fe, 0x14}, {0x102f59466, 0x4}}, {0x103079760, 0x1400011c038}}, {0x10307ae20?, 0x14000200000?})
        /Users/emil/projects/neva/tmp/runtime/program.go:94 +0x8c
github.com/nevalang/neva/internal/runtime/funcs.panicker.Create.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/funcs/panic.go:23 +0x54
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1.1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:63 +0x34
created by github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1 in goroutine 36
        /Users/emil/projects/neva/tmp/runtime/runtime.go:62 +0x68

goroutine 10 [select]:
github.com/nevalang/neva/internal/runtime.SingleInport.Receive({0x1400010a230, {{0x102f5bacf, 0xd}, {0x102f592ee, 0x3}}, {0x103079760, 0x1400011c038}}, {0x10307ae20?, 0x14000200000?})
        /Users/emil/projects/neva/tmp/runtime/program.go:94 +0x8c
github.com/nevalang/neva/internal/runtime/funcs.newV2.Create.func1({0x10307ae20, 0x14000200000})
        /Users/emil/projects/neva/tmp/runtime/funcs/new_v2.go:24 +0x74
github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1.1()
        /Users/emil/projects/neva/tmp/runtime/runtime.go:63 +0x34
created by github.com/nevalang/neva/internal/runtime.deferFuncCalls.func1 in goroutine 36
        /Users/emil/projects/neva/tmp/runtime/runtime.go:62 +0x68
failed to run generated executable: exit status 2

Test:

	for i := 0; i < 100; i++ {
		cmd := exec.Command("neva", "run", "main")

		out, err := cmd.CombinedOutput()
		require.NoError(t, err, "iteration %d", i, string(out))
		require.Equal(
			t,
			"success!\n",
			string(out),
		)

		require.Equal(t, 0, cmd.ProcessState.ExitCode())
	}

[emil14]

Last lines of the trace

sent | must_handle/handler/write_all:res | {}
recv | must_handle/handler/__del__:data | {}

looks like write_all -> :res connection didn't worked out - write_all:res sent a message but compiler thought it's not used? and inserted __del__ node