[Mono-bugs] [Bug 471680] Marshal.PtrToStructure() error

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https://bugzilla.novell.com/show_bug.cgi?id=471680

User marcel.hauf at googlemail.com added comment
https://bugzilla.novell.com/show_bug.cgi?id=471680#c2


Marcel Hauf <marcel.hauf at googlemail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW
      Info Provider|marcel.hauf at googlemail.com  |




--- Comment #2 from Marcel Hauf <marcel.hauf at googlemail.com>  2009-02-02 14:48:53 MST ---
I debugged it again with gdb in console:
(gdb) file ./MonoVMSamples                                                   
Reading symbols from
/home/marcel/Projects/MonoVMSamples/MonoVMSamples/bin/Debug/MonoVMSamples...done.
(gdb) start                                                                     
Temporary breakpoint 1 at 0x400c74: file
/home/marcel/Projects/MonoVMSamples/MonoVMSamples/main.c, line 17.
Starting program:
/home/marcel/Projects/MonoVMSamples/MonoVMSamples/bin/Debug/MonoVMSamples
[Thread debugging using libthread_db enabled]

Temporary breakpoint 1, main (argc=1, argv=0x7fffffffdd58) at
/home/marcel/Projects/MonoVMSamples/MonoVMSamples/main.c:17
17              const char* file_name = "MyStructSample.dll";
(gdb) continue
Continuing.
[New Thread 0x7ffff7f91950 (LWP 23262)]
[New Thread 0x7ffff5767950 (LWP 23263)]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff68a6560 in strlen () from /lib64/libc.so.6
(gdb) continue
Continuing.
Stacktrace:

  at (wrapper managed-to-native) object.__icall_wrapper_mono_string_new_wrapper
(intptr) <0x00059>
  at (wrapper managed-to-native) object.__icall_wrapper_mono_string_new_wrapper
(intptr) <0xffffffff>
  at (wrapper unknown) CSharp.MyStruct.PtrToStructure (intptr,object)
<0xffffffff>
  at (wrapper runtime-invoke) CSharp.MyStruct.runtime_invoke_void_intptr_object
(object,intptr,intptr,intptr) <0xffffffff>
  at (wrapper managed-to-native)
System.Runtime.InteropServices.Marshal.PtrToStructure (intptr,System.Type)
<0x0005f>
  at (wrapper managed-to-native)
System.Runtime.InteropServices.Marshal.PtrToStructure (intptr,System.Type)
<0xffffffff>
  at CSharp.MyClass.SaveMyStruct (intptr) <0x00037>
  at (wrapper runtime-invoke) CSharp.MyClass.runtime_invoke_void_intptr
(object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

Inconsistency detected by ld.so: dl-open.c: 623: _dl_open: Assertion
`_dl_debug_initialize (0, args.nsid)->r_state == RT_CONSISTENT' failed!
[Thread 0x7ffff7f91950 (LWP 23262) exited]
[Thread 0x7ffff5767950 (LWP 23263) exited]

Program exited with code 0177.

Compiling with this arguments:
gcc  -MMD "/home/marcel/Projects/MonoVMSamples/MonoVMSamples/main.c" -g -O0
-ggdb3 -DDEBUG -DMONODEVELOP
-I"/home/marcel/Projects/MonoVMSamples/MonoVMSamples/.prec/Debug" -D_REENTRANT
-pthread -I/usr/lib64/pkgconfig/../../include/mono-1.0 -I/usr/include/glib-2.0
-I/usr/lib64/glib-2.0/include  
 -c -o "/home/marcel/Projects/MonoVMSamples/MonoVMSamples/bin/Debug/main.o"

gcc -o
"/home/marcel/Projects/MonoVMSamples/MonoVMSamples/bin/Debug/MonoVMSamples"
"/home/marcel/Projects/MonoVMSamples/MonoVMSamples/bin/Debug/main.o" 
-Wl,--export-dynamic -pthread -L/usr/lib64/pkgconfig/../../lib64 -lmono -ldl
-lpthread -lm -lgthread-2.0 -lrt -lglib-2.0  

/usr/bin/gmcs
"/out:/home/marcel/Projects/MonoVMSamples/MonoVMSamples/bin/Debug/MyStructSample.dll"
"/r:System.dll" /noconfig /nologo /codepage:utf8 /warn:4 /debug:+ /debug:full
/optimize- -unsafe /define:"DEBUG" /t:library
"/home/marcel/Projects/MonoVMSamples/MyStructSample/MyClass.cs"
"/home/marcel/Projects/MonoVMSamples/MyStructSample/AssemblyInfo.cs"

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