inconsistent stack pattern: pt = false, lpt = false, ls = 2, sd = 0

[mfateev]

I'm trying to execute the simple Go program compiled to wasm:

maxpro:gowasm maxim$ cat wasm.go
package main

func main() {
}
maxpro:gowasm maxim$ GOOS=js GOARCH=wasm go build -o main.wasm
maxpro:gowasm maxim$ wasm-validate ./main.wasm
maxpro:gowasm maxim$

When trying to execute it using life/main.go I'm getting the following panic:

panic: Error: inconsistent stack pattern: pt = false, lpt = false, ls = 2, sd = 0
---GO TRACEBACK---
goroutine 1 [running]:
runtime/debug.Stack(0x4195060, 0xc000b13a30, 0x4240480)
        /usr/local/go/src/runtime/debug/stack.go:24 +0x9d
github.com/perlin-network/life/utils.CatchPanic(0xc000195a40)
        /Users/maxim/temporal/life/utils/catch.go:11 +0x72
panic(0x4195060, 0xc000b13a30)
        /usr/local/go/src/runtime/panic.go:679 +0x1b2
github.com/perlin-network/life/compiler.(*SSAFunctionCompiler).Compile(0xc000195988, 0xc00000ad00, 0x13, 0x20)
        /Users/maxim/temporal/life/compiler/ssa.go:339 +0xcb95
github.com/perlin-network/life/compiler.(*Module).CompileForInterpreter(0xc00000e040, 0x0, 0x0, 0xc00016a000, 0x6c5, 0x6cc, 0x0, 0x0)
        /Users/maxim/temporal/life/compiler/module.go:264 +0xa5f
github.com/perlin-network/life/exec.NewVirtualMachine(0xc000162000, 0x228953, 0x228b53, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0x10000, ...)
        /Users/maxim/temporal/life/exec/vm.go:437 +0xd0
main.main()
        /Users/maxim/temporal/life/main.go:82 +0x300


goroutine 1 [running]:
main.main()
        /Users/maxim/temporal/life/main.go:89 +0xbe1

Process finished with exit code 2

I do understand that really executing Go program would require polyfilling functions that Go needs, but at least it would be nice to be able to compile and run it until it fails with the first such function.

[mfateev]

Commenting out panic at ssa.go:339 lets the module to execute, failing as expected on non
resolved go runtime.nanotime :

Got a connection, launched process /private/var/folders/q2/4s0fwr9s30zbg8qr8tw8y_440000gn/T/___go_build_main_go (pid = 68435).
Resolve func: go runtime.nanotime
--- Begin stack trace ---
<5> [3] 
<4> [800] 
<3> [445] 
<2> [442] 
<1> [735] 
<0> [782] 
--- End stack trace ---
panic: unknown module: go

goroutine 1 [running]:
main.main()
        /Users/maxim/temporal/life/main.go:138 +0x1086
Exiting.

[roman-kashitsyn]

I have the same issue as well.

In my case the SSA "compiler" can't handle blocks and ifs returning a value, e.g.

block i32
  ; ...
end

if i32
  ; ...
else
  ; ...
end

Commenting out the panic leads to either another panic (e.g., "stack underflow") or invalid intermediate code (which might still produce correct result).