// license that can be found in the LICENSE file.

// Addr2line is a minimal simulation of the GNU addr2line tool,
// just enough to support pprof.
//
// Usage:
//
//	go tool addr2line binary
//
// Addr2line reads hexadecimal addresses, one per line and with optional 0x prefix,
// from standard input. For each input address, addr2line prints two output lines,
// first the name of the function containing the address and second the file:line

	// as expected.
	f := Fopen("main.go", "r")
	if f.Swigcptr() == 0 {
		fatal("fopen failed")
	}
	if Fgetc(f) != '/' || Fgetc(f) != '/' || Fgetc(f) != ' ' || Fgetc(f) != 'C' {
		fatal("read unexpected characters")
	}
	if Fclose(f) != 0 {
		fatal("fclose failed")
	}

	println("OK")
}

func fatal(f string, args ...any) {
	fmt.Fprintln(os.Stderr, fmt.Sprintf(f, args...))
	os.Exit(1)