Add a way to fail the process on `panic!`

Issue by larsbergstrom
Friday Feb 28, 2014 at 20:41 GMT

For earlier discussion, see https://github.com/rust-lang/rust/issues/12629

This issue was labelled with: in the Rust repository

It would be nice to have something like an environment variable or a runtime flag we could set that would cause calls to fail! to unconditionally terminate the entire process.

When we are running reference tests and content tests in Servo, we often want failure within a task to take down the whole process, both because our recovery could cause a "false" test success and because our failure recovery (currently) often results in a hung process.

This feature would also be very nice for easily getting a good stack backtrace from an intermittent failure - we can just do ulimit -c unlimited, turn on this flag, and then run the test until a core file is emitted.

Read the earlier discussion at rust-lang/rust#12629 first; the issue names no files, tests, or entry points. Define the desired process-wide behavior for task failures, the flag or environment-variable interface, and a testable termination and backtrace outcome before implementation.