Lua sys.io.process hangs if exitCode called before reading from stdout

[0b1kn00b]

haxe 5.0.0-alpha.1+bdae3e7
lua Lua 5.4.7

import sys.io.Process;

class Main {
	static function main() {
		//read then check exitCode
		final proc = new Process("curl", ["-isS","-X","GET","https://api.github.com/repos/HaxeFoundation/haxe/releases"]);
		trace(proc.stdout.readAll().toString());
		
		final code = proc.exitCode(true);//OK
	

		//check exitCode first
		final proc = new Process("curl", ["-isS","-X","GET","https://api.github.com/repos/HaxeFoundation/haxe/releases"]);
		final code = proc.exitCode(true);//HANGs
	}
}

Lua Process Return.tar.gz

[0b1kn00b]

There are exceptions, I don't quite understand it:

		final proc = new Process("echo", ["'hello world'"]);
		final code = proc.exitCode(true);//OK

[tobil4sk]

The most likely reason is that the stdout buffer becomes full, which causes the curl process to hang as it cannot print any more to stdout. You have to read stdout to create space again or pass flags into curl that stop it from writing to stdout. I'd imagine that if you try on another target this would reproduce there too.

[0b1kn00b]

That tracks. I'll close this.