[rustc.git] / extra / bitflags / CONTRIBUTING.md

# Updating compile-fail test outputs

`bitflags` uses the `trybuild` crate to integration test its macros. Since Rust error messages change frequently enough that `nightly` builds produce spurious failures, we only check the compiler output in `beta` builds. If you run:

```
TRYBUILD=overwrite cargo +beta test --all
```

it will run the tests and update the `trybuild` output files.
Commit	Line	Data
0a29b90c FG	1	# Updating compile-fail test outputs
	2
	3	`bitflags` uses the `trybuild` crate to integration test its macros. Since Rust error messages change frequently enough that `nightly` builds produce spurious failures, we only check the compiler output in `beta` builds. If you run:
	4
	5	```
	6	TRYBUILD=overwrite cargo +beta test --all
	7	```
	8
	9	it will run the tests and update the `trybuild` output files.