On Wed, Oct 31, 2012 at 02:17:18PM +0200, Mihai Chelaru wrote: > Is it the semaphore in finalizer_thread ? Can you try with 2.11 ? I've just seen it again building 2.11 on 6.99.14/amd64. It hung here: gmake[8]: Entering directory `/scratch/lang/mono/work/mono-2.11.4/mcs/class/System.Xml.Linq' MCS [net_2_0] System.Xml.Linq.dll Then I tried, as root, to attach gdb to the process, but failed: # gdb /home/wiz/sandbox/scratch/lang/mono/work/mono-2.11.4/mono/mini/mono 22901 GNU gdb (GDB) 7.3.1 Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64--netbsd". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /home/wiz/sandbox/scratch/lang/mono/work/mono-2.11.4/mono/mini/mono...done. Attaching to program: /home/wiz/sandbox/scratch/lang/mono/work/mono-2.11.4/mono/mini/mono, process 22901 Reading symbols from /usr/lib/libm.so.0...done. Loaded symbols for /usr/lib/libm.so.0 Reading symbols from /usr/lib/libpthread.so.1...done. [New LWP 9] [New LWP 8] [New LWP 7] [New LWP 6] [New LWP 5] [New LWP 4] [New LWP 3] [New LWP 2] Loaded symbols for /usr/lib/libpthread.so.1 Reading symbols from /usr/lib/libc.so.12...done. Loaded symbols for /usr/lib/libc.so.12 Reading symbols from /usr/lib/libgcc_s.so.1...done. Loaded symbols for /usr/lib/libgcc_s.so.1 Reading symbols from /usr/libexec/ld.elf_so...done. Loaded symbols for /usr/libexec/ld.elf_so /archive/cvs/src/external/gpl3/gdb/dist/gdb/thread.c:81: internal-error: inferior_thread: Assertion `tp' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Quit this debugging session? (y or n) y /archive/cvs/src/external/gpl3/gdb/dist/gdb/thread.c:81: internal-error: inferior_thread: Assertion `tp' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Create a core file of GDB? (y or n) n sorry, pid 22901 was killed: orphaned traced process So I can't really answer your question, sorry :( > Patches included for build. Be careful, PLIST is not modified in case > you want to install. Have you looked at 3.0? Should we update to that? (2.11 is a beta version, I think). Thomas