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need help debugging
- To: gcc at gcc dot gnu dot org
- Subject: need help debugging
- From: Michael Ritzert <michael dot ritzert at realtech dot de>
- Date: Sat, 19 May 2001 16:37:17 +0200
Hi all,
I've run into problems compiling ORBacus using CVS gcc, both HEAD and
branch. The build stops when it tries to run the just compiled idl compiler
for the first time and it crashes with a seg fault. gcc 2.95.3 works just
fine, so I think this is a compiler bug and a regression.
The problem exists for at least 2 weeks now. gcc CVS from 2000-12-17 works
fine.
I've run the command in a debugging session and got this (run through
c++filt):
(gdb) r
Starting program: /home/ritzert/compile/apathix.realtech.de/OB-4.0.5/ob/src/imr/../../bin/idl -I. --dll-import OB_IMR_IMPORT -I../../idl --this-header-dir OB ../../idl/OB/IMR.idl
Program received signal SIGSEGV, Segmentation fault.
0x40146492 in CORBA::Container_impl::Container_impl(CORBA::ORB*, PortableServer::POA*, CORBA::Repository_impl*) (this=0x8152e5c, __vtt_parm=0x402990e8, orb=0x8124870,
poa=0x814f3b8, r=0x0) at IFR2_impl.cpp:408
408 {
(gdb) bt
#0 0x40146492 in CORBA::Container_impl::Container_impl(CORBA::ORB*, PortableServer::POA*, CORBA::Repository_impl*) (this=0x8152e5c, __vtt_parm=0x402990e8, orb=0x8124870,
poa=0x814f3b8, r=0x0) at IFR2_impl.cpp:408
#1 0x40174d43 in CORBA::Repository_impl::Repository_impl(CORBA::ORB*, PortableServer::POA*)
(__vtt_parm=0x8152de0, orb=0x8124870, poa=0x814f3b8) at IFR3_impl.cpp:67
#2 0x805f5c8 in run(CORBA::ORB*, int, char**) (orb=0x8124870, argc=8,
argv=0xbffff554) at IDL.cpp:564
#3 0x8060a8d in main (argc=8, argv=0xbffff554) at IDL.cpp:744
Hmm, not really enlightening...
Ok, my next step was to use objdump to look at the generated code (in a
.so):
00131400 <CORBA::Container_impl::Container_impl(CORBA::ORB*, PortableServer::POA*, CORBA::Repository_impl*)>:
Container_impl::Container_impl(ORB_ptr orb,
POA_ptr poa,
Repository_impl* r)
: IRObject_impl(orb, poa, r)
131400: 55 push %ebp
131401: 89 e5 mov %esp,%ebp
131403: 57 push %edi
131404: 56 push %esi
131405: 53 push %ebx
131406: 83 ec 2c sub $0x2c,%esp
131409: e8 1e 6d 01 00 call 14812c <_GLOBAL__D__ZN5CORBA14Contained_implC2EPNS_3ORBEPN14PortableServer3POAEPNS_14Container_implEPNS_15Repository_implE+0x1c>
13140e: 81 c3 42 7a 1f 00 add $0x1f7a42,%ebx
131414: 8b 55 08 mov 0x8(%ebp),%edx
{
131417: 8b 45 0c mov 0xc(%ebp),%eax
13141a: 8b 00 mov (%eax),%eax
13141c: 89 02 mov %eax,(%edx)
13141e: 8b 02 mov (%edx),%eax
131420: 2d 8c 00 00 00 sub $0x8c,%eax
131425: 8b 08 mov (%eax),%ecx
131427: 8b 45 0c mov 0xc(%ebp),%eax
13142a: 83 c0 04 add $0x4,%eax
13142d: 8b 00 mov (%eax),%eax
13142f: 89 04 11 mov %eax,(%ecx,%edx,1)
131432: 8b 32 mov (%edx),%esi
131434: 81 ee 8c 00 00 00 sub $0x8c,%esi
13143a: 8b 02 mov (%edx),%eax
13143c: 2d 8c 00 00 00 sub $0x8c,%eax
131441: 8b 00 mov (%eax),%eax
131443: 8b 0c 10 mov (%eax,%edx,1),%ecx
131446: 83 e9 48 sub $0x48,%ecx
131449: 89 d0 mov %edx,%eax
13144b: 03 06 add (%esi),%eax
13144d: 8b 09 mov (%ecx),%ecx
13144f: 8d 0c 01 lea (%ecx,%eax,1),%ecx
131452: 8b 45 0c mov 0xc(%ebp),%eax
131455: 83 c0 08 add $0x8,%eax
131458: 8b 00 mov (%eax),%eax
13145a: 89 01 mov %eax,(%ecx)
13145c: 8b 02 mov (%edx),%eax
13145e: 2d 8c 00 00 00 sub $0x8c,%eax
131463: 89 45 f0 mov %eax,0xfffffff0(%ebp)
131466: 8b 02 mov (%edx),%eax
131468: 2d 8c 00 00 00 sub $0x8c,%eax
13146d: 8b 00 mov (%eax),%eax
13146f: 8b 3c 10 mov (%eax,%edx,1),%edi
131472: 83 ef 48 sub $0x48,%edi
131475: 8b 32 mov (%edx),%esi
131477: 81 ee 8c 00 00 00 sub $0x8c,%esi
13147d: 8b 02 mov (%edx),%eax
13147f: 2d 8c 00 00 00 sub $0x8c,%eax
131484: 8b 00 mov (%eax),%eax
131486: 8b 0c 10 mov (%eax,%edx,1),%ecx
131489: 83 e9 48 sub $0x48,%ecx
13148c: 89 d0 mov %edx,%eax
13148e: 03 06 add (%esi),%eax
131490: 03 01 add (%ecx),%eax
131492: 8b 08 mov (%eax),%ecx
131494: 83 e9 3c sub $0x3c,%ecx
131497: 89 d0 mov %edx,%eax
131499: 8b 75 f0 mov 0xfffffff0(%ebp),%esi
13149c: 03 06 add (%esi),%eax
13149e: 03 07 add (%edi),%eax
1314a0: 8b 09 mov (%ecx),%ecx
1314a2: 8d 0c 01 lea (%ecx,%eax,1),%ecx
1314a5: 8b 45 0c mov 0xc(%ebp),%eax
1314a8: 83 c0 0c add $0xc,%eax
1314ab: 8b 00 mov (%eax),%eax
1314ad: 89 01 mov %eax,(%ecx)
1314af: 8b 02 mov (%edx),%eax
1314b1: 2d 90 00 00 00 sub $0x90,%eax
1314b6: 8b 08 mov (%eax),%ecx
1314b8: 8b 45 0c mov 0xc(%ebp),%eax
1314bb: 83 c0 10 add $0x10,%eax
1314be: 8b 00 mov (%eax),%eax
1314c0: 89 04 11 mov %eax,(%ecx,%edx,1)
1314c3: 8b 32 mov (%edx),%esi
1314c5: 81 ee 90 00 00 00 sub $0x90,%esi
1314cb: 8b 02 mov (%edx),%eax
1314cd: 2d 90 00 00 00 sub $0x90,%eax
1314d2: 8b 00 mov (%eax),%eax
1314d4: 8b 0c 10 mov (%eax,%edx,1),%ecx
1314d7: 83 e9 44 sub $0x44,%ecx
1314da: 89 d0 mov %edx,%eax
1314dc: 03 06 add (%esi),%eax
1314de: 8b 09 mov (%ecx),%ecx
1314e0: 8d 0c 01 lea (%ecx,%eax,1),%ecx
1314e3: 8b 45 0c mov 0xc(%ebp),%eax
1314e6: 83 c0 14 add $0x14,%eax
1314e9: 8b 00 mov (%eax),%eax
1314eb: 89 01 mov %eax,(%ecx)
1314ed: 8b 02 mov (%edx),%eax
1314ef: 2d 90 00 00 00 sub $0x90,%eax
1314f4: 89 45 ec mov %eax,0xffffffec(%ebp)
1314f7: 8b 02 mov (%edx),%eax
1314f9: 2d 90 00 00 00 sub $0x90,%eax
1314fe: 8b 00 mov (%eax),%eax
131500: 8b 3c 10 mov (%eax,%edx,1),%edi
131503: 83 ef 44 sub $0x44,%edi
131506: 8b 32 mov (%edx),%esi
131508: 81 ee 90 00 00 00 sub $0x90,%esi
13150e: 8b 02 mov (%edx),%eax
131510: 2d 90 00 00 00 sub $0x90,%eax
131515: 8b 00 mov (%eax),%eax
131517: 8b 0c 10 mov (%eax,%edx,1),%ecx
13151a: 83 e9 44 sub $0x44,%ecx
13151d: 89 d0 mov %edx,%eax
13151f: 03 06 add (%esi),%eax
131521: 03 01 add (%ecx),%eax
131523: 8b 08 mov (%eax),%ecx
131525: 83 e9 40 sub $0x40,%ecx
131528: 89 d0 mov %edx,%eax
13152a: 8b 75 ec mov 0xffffffec(%ebp),%esi
13152d: 03 06 add (%esi),%eax
13152f: 03 07 add (%edi),%eax
131531: 8b 09 mov (%ecx),%ecx
131533: 8d 0c 01 lea (%ecx,%eax,1),%ecx
131536: 8b 45 0c mov 0xc(%ebp),%eax
131539: 83 c0 18 add $0x18,%eax
13153c: 8b 00 mov (%eax),%eax
13153e: 89 01 mov %eax,(%ecx)
131540: 83 ec 0c sub $0xc,%esp
131543: 8d 42 04 lea 0x4(%edx),%eax
131546: 50 push %eax
131547: e8 90 c9 fb ff call ededc <_init+0x67e0>
13154c: 83 c4 10 add $0x10,%esp
}
now I really dont't know what it's doing here - I'm not even sure this
is the correct part of the dump...
I really would like to help debugging this but could need a little
inspiration what to do next. I won't file a PR until I can provide you
quite a bit more information. Stripping down the problem to a small test
case is probably not possible since this executable uses code from some
20 files.
My OS is i686-linux.
Regards,
Michael