dump_preprocessed_input test fails on Windows when checked out with CRLF line endings

[AndrewGaspar]

On Windows, typically users set the git core.autocrlf=true option to checkout files with Windows-style line endings, but to checkin with Unix-style line endings.

The dump_preprocessed_input test validates that an output file __bindgen.ii contains an input file arg_keyword.hpp. However, __bindgen.ii is output with LF line endings, and so arg_keyword.hpp's contents do not match.

I've validated the test passes if you check out the repo with LF line endings.

[AndrewGaspar]

The reason this doesn't seem to be an issue with the rest of the tests is because rustfmt normalizes the line endings to LF when doing the comparison

[AndrewGaspar]

@highfive: assign me

[highfive]

Hey @AndrewGaspar! Thanks for your interest in working on this issue. It's now assigned to you!

[fitzgen]

FYI @AndrewGaspar, if you add Fixes #12345 to the commit message or PR comment, then github will automatically close the issue when the PR is merged :)