Clang :: Headers/cxx11.cpp failing

Clang Frontend
1

Hi,

The test Headers/cxx11.cpp has been failing with a crash on
Release+Asserts builds since some time last week.

This doesn't show up on the build servers so is presumably OK in
Release-Asserts and Debug.

Trace attached. Will investigate if nobody steps up.

Alp.

crash.txt (5.32 KB)

2

For the record, Rafael just fixed this in r194358 (reverting r194357).

Alp.

3

I'm not certain, but I suspect that's incidental. I've been seeing
quite a few failures like that caused by stale Darwin.pcm files being
kept around. Should the test-harness be deleting them before each run,
perhaps? Or should Clang be spotting that they're stale by some means?

Cheers.

Tim.

4

For the record, Rafael just fixed this in r194358 (reverting r194357).

I'm not certain, but I suspect that's incidental. I've been seeing
quite a few failures like that caused by stale Darwin.pcm files being
kept around. Should the test-harness be deleting them before each run,
perhaps? Or should Clang be spotting that they're stale by some means?

Tim, I think you're right. There was stale Darwin.pcm in the directory.

Curiously, I could still reproduce/fix the crash until yesterday by
reverting/applying Rafael's completely unrelated patch.

My guess was that it had something to do with hardlinks or the
filesystem. Interesting to hear you've seen this too.

Alp.

5

My guess was that it had something to do with hardlinks or the
filesystem. Interesting to hear you've seen this too.

I was beginning to think I was going insane since none of the existing
bots had seen anything like it (that I'd noticed).

Tim.