[GHC] #16405: Plugin tests are remarkably fragile on Windows

#16405: Plugin tests are remarkably fragile on Windows -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 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: -------------------------------------+------------------------------------- There is something odd afoot in the tests in `testsuite/tests/plugins` on Windows. In any given testsuite run at least half a dozen of these tests fail for one reason or another (often a timeout sometimes another). I'm collecting these failures here to try to make sense of them: {{{ =====> T16260(normal) 6833 of 6839 [2, 14, 0] cd "plugins/T16260.run" && $MAKE -s --no-print-directory -C simple-plugin package.T16260 TOP=/c/GitLabRunner/builds/78d7d3f9/0/ghc/ghc/testsuite cd "plugins/T16260.run" && $MAKE -s --no-print-directory T16260 --- plugins/T16260.run/T16260.stdout.normalised 2019-03-06 03:20:38.902713500 +0000 +++ plugins/T16260.run/T16260.run.stdout.normalised 2019-03-06 03:20:38.903686400 +0000 @@ -1,4 +0,0 @@ -False -None -True -Safe Actual stdout output differs from expected: diff -uw "plugins/T16260.run/T16260.stdout.normalised" "plugins/T16260.run/T16260.run.stdout.normalised" }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16405 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#16405: Plugin tests are remarkably fragile on Windows -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): It seems like nearly all of these failures are due to timeouts. I have increased the timeout multiplier to 5 and yet still essentially the same number of tests fail. I'm going to mark these as fragile for the moment. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16405#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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