Simon Jakobi pushed to branch wip/sjakobi/T17088 at Glasgow Haskell Compiler / GHC

Commits:

• 95150960
  by Simon Jakobi at 2026-07-21T18:39:00+02:00

  testsuite: Run T17088 only with compacting GC
  
  T17088 is a regression test for #17088, a pointer-tagging bug in the
  compacting collector. Restore its original single-way scope, which was
  lost when the test was converted to use the compacting_gc way.
  
  The reproducer reads and prints an uninitialized byte array, so its
  stdout is not stable. Ignore stdout while retaining checks for crashes
  and other failures.
  
  Closes #27534
  
  Assisted-by: gpt-5.6-sol via Codex CLI
  

1 changed file:

• testsuite/tests/rts/all.T

Changes:

      compile_and_run, ['RestartEventLogging_c.c'])

 test('T17088',

-     [extra_ways(['compacting_gc']), extra_run_opts('+RTS -A256k -RTS')],

+     [ only_ways(['compacting_gc'])

+     , extra_ways(['compacting_gc'])

+     , ignore_stdout # The test prints uninitialized memory. See #27534

+     , extra_run_opts('+RTS -A256k -RTS')

+     ],

      compile_and_run, ['-rtsopts -O2'])

 test('T15427', js_broken(22374), compile_and_run, [''])