`catalyst` CLI tool hangs without input file

[kipawaa]

Issue

When calling catalyst --list-passes I noticed that the command hangs rather than perform the desired action. This happens as well when called directly with catalyst. When provided an input file (catalyst --list-passes test.mlir), the command runs but the file is optimized and no passes are listed.

Expected behaviour

I would expect behaviour similar to quantum-opt, which when called directly listens to stdin for mlir to process, or an error to be raised.

MRE

./mlir/build/bin/catalyst from project root.

[dime10]

Weird, thanks for reporting this! As a workaround, catalyst --help also lists all the passes

[paul0403]

It might be waiting on some input mlir (which shouldn't happen with this option)

[paul0403]

Well, in any case it's not one of our options, it's from upstream MLIR https://github.com/llvm/llvm-project/blob/c3b4d94cd0eb08f818bf438b2dfbac38fe69e3ad/mlir/lib/Tools/mlir-opt/MlirOptMain.cpp#L133