Hello world example does not work on WSL v1 and WSL v2 (Ubuntu 24.04)

[vadimkantorov]

On WSLv1 I got a segfault in GC:

$ cat main.go
package main

import "fmt"

func main() {
    fmt.Println("Hello, World!")
}

$ go run main.go
Hello, World!

$ tinygo run main.go
Absurd stack bottom value: 0x0
Absurd stack bottom value
failed to run compiled binary /tmp/tinygo1773568974/main: signal: aborted (core dumped)

$ tinygo build -o hello ./main.go

$ gdb -ex run --args ./hello

(gdb) thread apply all bt

Thread 1 (process 18903 "hello"):
#0  __restore_sigs (set=set@entry=0x7ffffffecee8) at /usr/local/lib/tinygo/lib/musl/src/signal/block.c:44
#1  0x0000000000217c3f in raise (sig=<optimized out>) at /usr/local/lib/tinygo/lib/musl/src/signal/raise.c:11
#2  0x00000000002176cc in abort () at /usr/local/lib/tinygo/lib/musl/src/exit/abort.c:11
#3  0x00000000002165a4 in os_main_stackbottom () at /usr/local/lib/tinygo/lib/bdwgc/os_dep.c:1271
#4  GC_get_main_stack_base () at /usr/local/lib/tinygo/lib/bdwgc/os_dep.c:1403
#5  0x0000000000215b6f in GC_init () at /usr/local/lib/tinygo/lib/bdwgc/misc.c:1390
#6  0x000000000021e220 in runtime.initHeap () at /usr/local/lib/tinygo/src/runtime/gc_boehm.go:39
#7  runtime.run () at /usr/local/lib/tinygo/src/runtime/scheduler_threads.go:24
#8  runtime.runMain () at /usr/local/lib/tinygo/src/runtime/runtime_unix.go:136
#9  0x000000000021e209 in main (argc=<optimized out>, argv=<optimized out>) at /usr/local/lib/tinygo/src/runtime/runtime_unix.go:98

On WSLv2 (also Ubuntu 24.04) I got:

$ sudo apt install golang-go

$ go run main.go
Hello, World!

$ tinygo run ./main.go
could not parse Go version: version does not start with 'go' prefix

$ go version
go version go1.13.8 linux/amd64

# even if the go version is too old, it does start with 'go' prefix, the error message should be adjusted

After upgrade to 1.25, it finally worked:

$ go version
go version go1.25.0 linux/amd64

$ tinygo run main.go
Hello world!

[aykevl]

Interesting that it doesn't work on WSL1. WSL1 is a subsystem of Windows, it's not actually Linux. So I'm not surprised we hit some issues, though I didn't expect this would be one. Would be nice to fix, but since it works fine in native Windows and WSL2 it's not a high priority for me personally.

As for the Go 1.13 issue, feel free to submit a PR. The relevant code is here:

tinygo/goenv/version.go

Lines 56 to 58 in 3869f76

	if version == "" || version[:2] != "go" {
	return 0, 0, 0, errors.New("could not parse Go version: version does not start with 'go' prefix")
	}

[vadimkantorov]

In WSLv2 tinygo gives incorrect error message for old go - which is quite confusing. I checked the code, and it's very strange, as go1.13 also prints it version with go prefix

I've used WSLv1 over many years. Typically, compilers and toolchains work fine in WSLv1 without any issues (which is way more lightweight than WSLv2, so it has some merits) - go does work, for instance. So would be nice for tinygo to either work or at least fail properly, not with a segfault...