llvm-project

a40b88d7 - [lit] Add stream-injectable run() core to builtin cat (#204711)

[lit] Add stream-injectable run() core to builtin cat (#204711) Pull cat's logic out into run(argv, stdin, stdout, stderr, cwd) so it takes explicit streams instead of touching sys.std* directly. main() just calls run() with the real process streams, so nothing changes for the spawned-script path. Needed before cat can run in-process inside the lit worker Also switched file reads to raw bytes throughout, since the old text-mode read + win32 msvcrt.setmode was only there for sys.stdout's encoding, which doesn't apply once we pass in a binary stream directly. Error messages still report the original filename, not the cwd-joined path. Signed-off-by: Prasoon Kumar <prasoonkumar054@gmail.com>