#8684: hWaitForInput cannot be interrupted by async exceptions on unix -------------------------------------+------------------------------------- Reporter: nh2 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: 13497, 13525 | Blocking: Related Tickets: #12912, #13525 | Differential Rev(s): Phab:D42 Wiki Page: | -------------------------------------+------------------------------------- Comment (by nh2): I've augmented my debugging output by the Windows thread ID [https://github.com/ghc/ghc/blob/ghc-8.2.1-release/rts/win32/OSThreads.c#L558 here] and with `GetCurrentThreadId()`: {{{ fdReady called with msecs = 5000 calling WaitForSingleObject in windows thread id 0000000000000b14 calling pCSIO(thread id 0000000000000b14) pCSIO ret 0 pCSIO error: 1168 WaitForSingleObject rc 258 (WAIT_TIMEOUT) }}} Looks like the thread IDs are the same, so I currently have no idea why `pCSIO()` running wouldn't switftly terminate the `WaitForSingleObject()` on this `FILE_TYPE_CHAR` FD. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8684#comment:26 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler