Script used to help fix tests for https://github.com/llvm/llvm-project/pull/81037 ("[Driver] Improve error when a compiler-rt library is not found")

fix.py

#!/usr/bin/env python
import os, re, subprocess, sys
from ipdb import set_trace as bp

def main(filename):
    last = 0
    while 1:
        p = subprocess.run(['/tmp/Rel/bin/llvm-lit', '-v', filename], capture_output=True)
        if p.returncode != 1: break
        lines = p.stdout.decode().split('\n')
        m = None
        for line in lines:
            m = re.search(r'clang/test/Driver/([-0-9a-z]+\.\w+):(\d+).*error', line)
            if m: break
        if not m: break
        ms = m.groups()
        if ms[1] == last: break
        last = ms[1]
        with open(ms[0]) as f: content = f.read()
        lines = content.split('\n')
        t = lines[int(ms[1])-1]
        t = re.sub(r'lib{{/\|\\\\\\\\}}(linux|fuchsia){{/\|\\\\\\\\}}(libclang_rt.[_a-z]+)-([_0-9a-z]+)', r'lib{{.*}}\1{{.*}}\2', t)
        t = re.sub(r'(clang_rt.[_a-z]+)-([_0-9a-z]+)', '\\1', t)
        lines[int(ms[1])-1] = t
        with open(ms[0], 'w') as f: f.write('\n'.join(lines))
        print('update', ms)

os.putenv('NO_COLOR','1')
for i in sys.stdin.readlines():
    main(i.strip())