compile failed with undefined: C._Bool

[Patrick0308]

Environment:

tinygo version: 0.30.0
operating System: macOS
architecture: aarch64

Description:

Compilation brakes with an undefined C._Bool

Steps to reproduce:

Given the following Go-code:

package main

/*
  #include "stdbool.h"
  bool test() {
     return true;
  }
*/
import "C"

import "fmt"

func main() {
	fmt.Printf("%s", C._Bool(C.test()))
}

Run

tinygo run main.go

Expected behavior:

❯ tinygo run main.go
%!s(main._Ctype__Bool=true)%    

Actual behavior:

❯ tinygo run main.go
# command-line-arguments
main.go:14:19: undefined: C._Bool

[aykevl]

Well this led me down a rather deep rabbit hole to improve CGo compatibility: #3927

I'll look at the actual bug next.

[aykevl]

Here is a fix: #3928

[Patrick0308]

#3928 is merged

[deadprogram]

Reopening and tagging to close on next release.

[Patrick0308]

I build dev branch on my own computer. I tested

package main

/*
  #include "stdbool.h"
  bool test() {
     return true;
  }
*/
import "C"

import "fmt"

func main() {
	fmt.Printf("%s", C._Bool(C.test()))
}

It's ok.

However I tested fermyon/spin#1794 example but building painc.
The error log is

Building component tinygo-mysql with `/Users/patrick/projects/tinygo/build/tinygo build -target=wasi -gc=leaking -o main.wasm main.go`
# github.com/fermyon/spin/sdk/go/mysql
../../../tinygo/llvm-project/clang/lib/Headers/stdbool.h:20:14: undefined: C._Bool
Error: Build command for component tinygo-mysql failed with status Exited(1)

Is it another issue?

[Patrick0308]

@aykevl Any idea？

[aykevl]

@Patrick0308 my guess is that they're shipping their own TinyGo variant, that is still the latest release (and not the dev branch).