Hi,
I took Mono 2.8 preview 6 for Mac for a test drive on Mac OS X 10.6.4.
I have a .NET/Mono compiler that is self-hosting, meaning that it
compiles itself, like so:
$ cd cobra-workspace
$ mono Snapshot/cobra.exe -c -ert:yes cobra.cobra -files:files-to-compile.text
Which works fine under Mono 2.4 and 2.6, but under 2.8p6 gives:
Stacktrace:
at (wrapper managed-to-native)
System.Diagnostics.Process.Process_free_internal
(System.Diagnostics.Process*,intptr) <0x00003>
at (wrapper managed-to-native)
System.Diagnostics.Process.Process_free_internal
(System.Diagnostics.Process*,intptr) <0x00003>
at System.Diagnostics.Process.Dispose (bool) <0x000ca>
at System.Diagnostics.Process.Finalize () <0x00013>
at (wrapper runtime-invoke)
object.runtime_invoke_virtual_void__this__
(object,intptr,intptr,intptr) <0x0003d>
Native stacktrace:
0 mono 0x000c8cb6
mono_handle_native_sigsegv + 343
1 mono 0x0001059a
mono_sigsegv_signal_handler + 306
2 libSystem.B.dylib 0x982f71fb _sigtramp + 43
3 ??? 0xffffffff 0x0 + 4294967295
4 mono 0x0024319a _wapi_handle_unref +
159
5 mono 0x00243a17 CloseHandle + 93
6 mono 0x001e79d0
ves_icall_System_Diagnostics_Process_Process_free_internal + 17
7 ??? 0x01ec80cf 0x0 + 32276687
8 ??? 0x01ec7fdb 0x0 + 32276443
9 ??? 0x01ec7d7c 0x0 + 32275836
10 ??? 0x01ec7b8e 0x0 + 32275342
11 mono 0x00170182 mono_gc_run_finalize
+ 941
12 mono 0x00282dd8 GC_invoke_finalizers
+ 161
13 mono 0x00140961
mono_gc_invoke_finalizers + 20
14 mono 0x00171de0 finalizer_thread +
420
15 mono 0x0021da40 start_wrapper + 600
16 mono 0x0025b65f thread_start_routine
+ 194
17 mono 0x0028c833 GC_start_routine +
107
18 libSystem.B.dylib 0x982be81d _pthread_start + 345
19 libSystem.B.dylib 0x982be6a2 thread_start + 34
Debug info from gdb:
Phase: Reading libraries
Reading assembly: mscorlib, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089
at:
/Library/Frameworks/Mono.framework/Versions/2.8/lib/mono/2.0/mscorlib.dll
Reading type RegistryKey in namespace "Microsoft.Win32"
/tmp/mono-gdb-commands.pb1OMT:1: Error in sourced command file:
unable to debug self
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
Abort trap
# end of output
My environment looks fairly normal:
$ env | grep -i mono
MONO_ROOT=/Library/Frameworks/Mono.framework/Versions/Current
PATH=.:~/bin:/usr/local/bin:/usr/local/mysql/bin:/Library/Frameworks/Python.framework/Versions/2.5/bin:/Library/Frameworks/Python.framework/Versions/Current/bin:/Library/Frameworks/Mono.framework/Versions/Current/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/opt/subversion/bin
$ l /Library/Frameworks/Mono.framework/Versions/Current
lrwxr-xr-x 1 root admin 3 Sep 25 09:56
/Library/Frameworks/Mono.framework/Versions/Current@ -> 2.8
I'll keep digging and see if I can reproduce in smaller program. In
the mean time, has anyone seen this or know what might be wrong?
-Chuck
--
http://charles-esterbrook.com/
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