#16350: Nondeterministic T5559 failures on CI -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.9 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `T5559` test case occasionally fails on CI, forcing me to restart builds to get a green build status. Here is [https://ghc- gitlab.s3.amazonaws.com/6b/86/6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b/2019_02_21/31578/49824/job.log ?response-content-type=text/plain%3B%20charset%3Dutf-8&response-content- disposition=inline&X-Amz-Expires=600&X-Amz-Date=20190221T104600Z&X-Amz- Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAI3NPPHETCY4XXTOA/20190221 /us-east-1/s3/aws4_request&X-Amz-SignedHeaders=host&X-Amz- Signature=4cda8d47d000a69a39765a5c141f1e33a610992f1f8ea60da83c4ec6eaca42d8 one example] from a `validate-x86_64-linux-fedora27` run: {{{ "gs" -dNODISPLAY -dBATCH -dQUIET -dNOPAUSE "profiling/should_run/T5559.run/T5559.ps" hp2ps output for T5559is not valid PostScript *** unexpected failure for T5559(profasm) <elided> SUMMARY for test run started at Thu Feb 21 00:32:08 2019 UTC 0:44:16 spent to go through 6839 total tests, which gave rise to 26523 test cases, of which 19210 were skipped 42 had missing libraries 7178 expected passes 92 expected failures 0 caused framework failures 0 caused framework warnings 0 unexpected passes 1 unexpected failures 0 unexpected stat failures Unexpected failures: profiling/should_run/T5559.run T5559 [bad heap profile] (profasm) }}} Aside from the nondeterministic test failure, this also reveals a minor bug: it prints `T5559is not valid PostScript`, which should probably be `T5559 is not valid PostScript` instead. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16350 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler