On 7/22/2019 2:47 PM, Houder wrote: > The specific regression as reported, has gone. > > 64-@@ uname -a > CYGWIN_NT-6.1 Seven 3.1.0s(0.339/5/3) 2019-07-22 16:43 x86_64 Cygwin > 64-@@ ls -lL <(grep bash .bashrc) > pr-------- 1 Henri None 0 Jul 22 20:36 /dev/fd/63 It turns out that this isn't completely fixed, but I only see the problem when working under X11, and the error message is different. Here are the complete reproduction steps: 1. Start the X server by using the XWin Server shortcut. 2. Use the X Applications Menu -> System Tools to start an xterm window. 3. In that window, execute the above 'ls' command.: $ ls -lL <(grep bash .bashrc) pr-------- 1 kbrown None 0 2019-07-26 17:24 /dev/fd/63 grep: write error: Broken pipe This is with the 2019-07-22 snapshot. With the 2019-07-25 snapshot, it's better but still broken: I have to run the ls command twice to get the error: $ ls -lL <(grep bash .bashrc) pr-------- 1 kbrown None 0 2019-07-26 17:39 /dev/fd/63 $ ls -lL <(grep bash .bashrc) pr-------- 1 kbrown None 0 2019-07-26 17:39 /dev/fd/63 grep: write error: Broken pipe Here's one more fact, which may or not provide further clues: When I exited the X server while testing the 2019-07-22 snapshot, there was a /bin/sh process still running that I couldn't kill with 'kill -9'. I had to kill it with the Task Manager. Finally, here's an excerpt from the strace output for the failing ls command: 24 23441 [main] ls 1033 fhandler_proc::get_proc_fhandler: get_proc_fhandler(/proc/1033/fd/63) 25 23466 [main] ls 1033 mount_info::conv_to_win32_path: src_path /proc/1033/fd/63, dst /proc/1033/fd/63, flags 0x0, rc 0 28 23494 [main] ls 1033 build_fh_pc: fh 0x180340098, dev 000000FB 24 23518 [main] ls 1033 fhandler_process::exists: exists (/proc/1033/fd/63) 28 23546 [main] ls 1033 __set_errno: cygheap_fdget::cygheap_fdget(int, bool, bool):679 setting errno 9 24 23570 [main] ls 1033 __set_errno: off_t format_process_fd(void*, char*&):394 setting errno 2 I'm in the process of building an unoptimized cygwin1.dll to see if I can get further information. Ken ТÒÐÐ¥&ö&ÆVÒ&W÷'G3¢‡GG¢òö7–wv–âæ6öÒ÷&ö&ÆV×2æ‡FÖÀФd¢‡GG¢òö7–wv–âæ6öÒöfðФFö7VÖVçFF–ö㢇GG¢òö7–wv–âæ6öÒöFö72æ‡FÖÀÐ¥Vç7V'67&–&R–æfó¢‡GG¢òö7–wv–âæ6öÒöÖÂò7Vç7V'67&–&R×6–×ÆPРÐ