[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Gcl-devel] Re: SGC/SAVE-SYSTEM Bug in Apple MacIntosh Version of GCL, M
|
From: |
Camm Maguire |
|
Subject: |
[Gcl-devel] Re: SGC/SAVE-SYSTEM Bug in Apple MacIntosh Version of GCL, MacOS 10.3.4 |
|
Date: |
15 Jan 2005 17:37:12 -0500 |
|
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 |
Greetings, and please excuse this followup to an old email. Am going
through all that I saved as outstanding GCL issue emails in
preparation for 2.6.6.
I've verified this. Aurelien, what appears to be happening is that
the C stack is getting write protected on sgc-on/saved-system. This
should make it quite easy to find out where the bug is.
Unfortunately, for me it will have to wait for 2.7, a 2.6.6 needs to
go out quickly.
Just to repeat, SGC will be disabled in 2.6.6 until we can sort this
out, so all should work properly out of the box. I am verifying the
ACL2 books no this build now.
Take care,
Robert Boyer <address@hidden> writes:
> Hi Aurelien and Camm,
>
> After building GCL 2.6.4 and GCL 2.7.0 on different Apple MacIntosh computers
> (one G4 and one G5) and having tested it extensively (and happily with SGC
> turned off), it seems pretty clear that there is a bug that involves an
> interaction between SGC and SAVE-SYSTEM.
>
> One can easily produce this error as follows. Start up gcl and execute
>
> (si::sgc-on t)
> (si::save-system "foo")
>
> Then start
>
> chmod +x foo
> gdb foo
> run
>
> One gets the error message:
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
>
> Going through this exercise omitting the (SI::SGC-ON T) does not seem to
> result in an error. In our experience executing (under Nqthm) an image saved
> after doing (SI::SGC-ON T), the errors one gets from GCL are really random.
> Just not doing the (SI::SGC-ON T) seems to make the errors go away.
>
> Warren and Bob
> ++++++++++++++
>
>
> Bob-Boyers-Computer:~ boyer$ date
> Wed Aug 11 16:50:35 CDT 2004
> Bob-Boyers-Computer:~ boyer$ gcl/gcl-2.6.4/unixport/saved_gcl
> GCL (GNU Common Lisp) 2.6.4 CLtL1 Aug 10 2004 09:25:06
> Source License: LGPL(gcl,gmp), GPL(unexec,bfd)
> Binary License: GPL due to GPL'ed components: (BFD UNEXEC)
> Modifications of this banner must retain notice of a compatible license
> Dedicated to the memory of W. Schelter
>
> Use (help) to get some basic information on how to use GCL.
>
> >(si::sgc-on t)
>
> T
>
> >(si::save-system "foo")
> DBEGIN: 0x1ac000
> mach_mapstart: 0x5f4000
> heap_end: 0x9fc000
> core_end: 0x9fd000
> mach_brkpt: 0x9f8a000
> mach_maplimit: 0x201ac000
> --- List of All Regions ---
> address size prot maxp zone_name
> 0 0x1000 none none (no zone)
> 0x1000 0x1000 r x rwx (no zone)
> 0x2000 0x1aa000 r x rwx (no zone)
> 0x1ac000 0x1000 rw rwx (no zone)
> 0x1ad000 0xe000 r x rwx (no zone)
> 0x1bb000 0x1000 rwx rwx (no zone)
> 0x1bc000 0x1000 rwx rwx (no zone)
> 0x1bd000 0x1000 rwx rwx (no zone)
> 0x1be000 0x3000 r x rwx (no zone)
> 0x1c1000 0x1000 rwx rwx (no zone)
> 0x1c2000 0x1000 rwx rwx (no zone)
> 0x1c3000 0x1000 r x rwx (no zone)
> 0x1c4000 0x35c000 r x rwx (no zone)
> 0x520000 0x1000 rwx rwx (no zone)
> 0x521000 0x8000 r x rwx (no zone)
> 0x529000 0x21000 rwx rwx (no zone)
> 0x54a000 0x3000 r x rwx (no zone)
> 0x54d000 0x2000 rwx rwx (no zone)
> 0x54f000 0x1f000 r x rwx (no zone)
> 0x56e000 0x1000 rwx rwx (no zone)
> 0x56f000 0x80000 r x rwx (no zone)
> 0x5ef000 0x1000 rwx rwx (no zone)
> 0x5f0000 0x1000 r x rwx (no zone)
> 0x5f1000 0x1000 rwx rwx (no zone)
> 0x5f2000 0x2000 rwx rwx (no zone)
> 0x5f4000 0x1000 r x rwx (no zone)
> 0x5f5000 0x1000 r x rwx (no zone)
> 0x5f6000 0x4000 rwx rwx (no zone name)
> 0x5fa000 0x1000 r x rwx (no zone)
> 0x5fb000 0x1000 r x rwx (no zone)
> 0x5fc000 0x1000 rwx rwx (no zone)
> 0x5fd000 0x1000 r x rwx (no zone)
> 0x5fe000 0x1000 r x rwx (no zone)
> 0x5ff000 0x1000 r x rwx (no zone)
> 0x600000 0x1000 r x rwx (no zone)
> 0x601000 0x2000 rwx rwx (no zone name)
> 0x603000 0x4000 r x rwx (no zone)
> 0x607000 0x1000 rwx rwx (no zone)
> 0x608000 0x5000 r x rwx (no zone)
> 0x60d000 0x1000 r x rwx (no zone)
> 0x60e000 0x1000 r x rwx (no zone)
> 0x60f000 0x24d000 rwx rwx (no zone name)
> 0x85c000 0x1000 r x rwx (no zone)
> 0x85d000 0x1f000 rwx rwx (no zone name)
> 0x87c000 0x6000 r x rwx (no zone)
> 0x882000 0x2000 rwx rwx (no zone)
> 0x884000 0xd000 r x rwx (no zone)
> 0x891000 0x1000 rwx rwx (no zone)
> 0x892000 0x5000 r x rwx (no zone)
> 0x897000 0x1000 rwx rwx (no zone)
> 0x898000 0x1f000 r x rwx (no zone)
> 0x8b7000 0x1000 rwx rwx (no zone)
> 0x8b8000 0x1b000 r x rwx (no zone)
> 0x8d3000 0x1000 rwx rwx (no zone)
> 0x8d4000 0xe000 r x rwx (no zone)
> 0x8e2000 0x1000 rwx rwx (no zone)
> 0x8e3000 0x2000 r x rwx (no zone)
> 0x8e5000 0x2000 rwx rwx (no zone)
> 0x8e7000 0x2000 r x rwx (no zone)
> 0x8e9000 0xf000 rwx rwx (no zone)
> 0x8f8000 0x3000 r x rwx (no zone)
> 0x8fb000 0xa000 rwx rwx (no zone)
> 0x905000 0x1000 r x rwx (no zone)
> 0x906000 0xd000 rwx rwx (no zone)
> 0x913000 0x1000 r x rwx (no zone)
> 0x914000 0x12000 rwx rwx (no zone)
> 0x926000 0x1000 r x rwx (no zone)
> 0x927000 0x2c000 rwx rwx (no zone)
> 0x953000 0x1000 r x rwx (no zone)
> 0x954000 0x2f000 rwx rwx (no zone)
> 0x983000 0x40000 r x rwx (no zone)
> 0x9c3000 0x1000 rwx rwx (no zone)
> 0x9c4000 0x1000 rwx rwx (no zone)
> 0x9c5000 0x1000 rwx rwx (no zone)
> 0x9c6000 0x1000 rwx rwx (no zone)
> 0x9c7000 0x1000 rwx rwx (no zone)
> 0x9c8000 0x1000 rwx rwx (no zone)
> 0x9c9000 0x1000 rwx rwx (no zone)
> 0x9ca000 0x1000 rwx rwx (no zone)
> 0x9cb000 0x1000 rwx rwx (no zone)
> 0x9cc000 0x1000 rwx rwx (no zone)
> 0x9cd000 0x1000 rwx rwx (no zone)
> 0x9ce000 0x1000 rwx rwx (no zone)
> 0x9cf000 0x1000 rwx rwx (no zone)
> 0x9d0000 0x1000 rwx rwx (no zone)
> 0x9d1000 0x1000 rwx rwx (no zone)
> 0x9d2000 0x1000 rwx rwx (no zone)
> 0x9d3000 0x1000 rwx rwx (no zone)
> 0x9d4000 0x1000 rwx rwx (no zone)
> 0x9d5000 0x1000 rwx rwx (no zone)
> 0x9d6000 0x1000 rwx rwx (no zone)
> 0x9d7000 0x1000 rwx rwx (no zone)
> 0x9d8000 0x1000 rwx rwx (no zone)
> 0x9d9000 0x1000 rwx rwx (no zone)
> 0x9da000 0x1000 rwx rwx (no zone)
> 0x9db000 0x1000 rwx rwx (no zone)
> 0x9dc000 0x1000 rwx rwx (no zone)
> 0x9dd000 0x1000 rwx rwx (no zone)
> 0x9de000 0x1000 rwx rwx (no zone)
> 0x9df000 0x1000 rwx rwx (no zone)
> 0x9e0000 0x1000 rwx rwx (no zone)
> 0x9e1000 0x1000 rwx rwx (no zone)
> 0x9e2000 0x1000 rwx rwx (no zone)
> 0x9e3000 0x1000 rwx rwx (no zone)
> 0x9e4000 0x1000 rwx rwx (no zone)
> 0x9e5000 0x1000 rwx rwx (no zone)
> 0x9e6000 0x1000 rwx rwx (no zone name)
> 0x9e7000 0x3310000 r x rwx (no zone)
> --- List of Regions to be Dumped ---
> address size prot maxp zone_name
> 0 0x1000 none none (no zone)
> 0x1000 0x1ab000 r x rwx (no zone)
> 0x1ac000 0x1000 rw rwx (no zone)
> 0x1ad000 0xe000 r x rwx (no zone)
> 0x1bb000 0x3000 rwx rwx (no zone)
> 0x1be000 0x3000 r x rwx (no zone)
> 0x1c1000 0x2000 rwx rwx (no zone)
> 0x1c3000 0x35d000 r x rwx (no zone)
> 0x520000 0x1000 rwx rwx (no zone)
> 0x521000 0x8000 r x rwx (no zone)
> 0x529000 0x21000 rwx rwx (no zone)
> 0x54a000 0x3000 r x rwx (no zone)
> 0x54d000 0x2000 rwx rwx (no zone)
> 0x54f000 0x1f000 r x rwx (no zone)
> 0x56e000 0x1000 rwx rwx (no zone)
> 0x56f000 0x80000 r x rwx (no zone)
> 0x5ef000 0x1000 rwx rwx (no zone)
> 0x5f0000 0x1000 r x rwx (no zone)
> 0x5f1000 0x3000 rwx rwx (no zone)
> 0x5f4000 0x2000 r x rwx (no zone)
> 0x5f6000 0x4000 rwx rwx (no zone name)
> 0x5fa000 0x2000 r x rwx (no zone)
> 0x5fc000 0x1000 rwx rwx (no zone)
> 0x5fd000 0x4000 r x rwx (no zone)
> 0x601000 0x2000 rwx rwx (no zone name)
> 0x603000 0x4000 r x rwx (no zone)
> 0x607000 0x1000 rwx rwx (no zone)
> 0x608000 0x7000 r x rwx (no zone)
> 0x60f000 0x24d000 rwx rwx (no zone name)
> 0x85c000 0x1000 r x rwx (no zone)
> 0x85d000 0x1f000 rwx rwx (no zone name)
> 0x87c000 0x6000 r x rwx (no zone)
> 0x882000 0x2000 rwx rwx (no zone)
> 0x884000 0xd000 r x rwx (no zone)
> 0x891000 0x1000 rwx rwx (no zone)
> 0x892000 0x5000 r x rwx (no zone)
> 0x897000 0x1000 rwx rwx (no zone)
> 0x898000 0x1f000 r x rwx (no zone)
> 0x8b7000 0x1000 rwx rwx (no zone)
> 0x8b8000 0x1b000 r x rwx (no zone)
> 0x8d3000 0x1000 rwx rwx (no zone)
> 0x8d4000 0xe000 r x rwx (no zone)
> 0x8e2000 0x1000 rwx rwx (no zone)
> 0x8e3000 0x2000 r x rwx (no zone)
> 0x8e5000 0x2000 rwx rwx (no zone)
> 0x8e7000 0x2000 r x rwx (no zone)
> 0x8e9000 0xf000 rwx rwx (no zone)
> 0x8f8000 0x3000 r x rwx (no zone)
> 0x8fb000 0xa000 rwx rwx (no zone)
> 0x905000 0x1000 r x rwx (no zone)
> 0x906000 0xd000 rwx rwx (no zone)
> 0x913000 0x1000 r x rwx (no zone)
> 0x914000 0x12000 rwx rwx (no zone)
> 0x926000 0x1000 r x rwx (no zone)
> 0x927000 0x2c000 rwx rwx (no zone)
> 0x953000 0x1000 r x rwx (no zone)
> 0x954000 0x2f000 rwx rwx (no zone)
> 0x983000 0x40000 r x rwx (no zone)
> 0x9c3000 0x23000 rwx rwx (no zone)
> 0x9e6000 0x1000 rwx rwx (no zone name)
> 0x9e7000 0x3310000 r x rwx (no zone)
> --- Header Information ---
> Magic = 0xfeedface
> CPUType = 18
> CPUSubType = 0
> FileType = 0x2
> NCmds = 12
> SizeOfCmds = 1860
> Flags = 0x00000085
> Highest address of load commands in input file: 0x3fe46000
> Lowest offset of all sections in __TEXT segment: 0x770
> --- List of Load Commands in Input File ---
> no cmd cmdsize name address size
> 0 LC_SEGMENT 0x38 __PAGEZERO 0 0x1000
> 1 LC_SEGMENT 0x29c __TEXT 0x1000 0x1ab000
> __text 0x1770 0x193ffc
> __picsymbol_stub 0x19576c 0
> __symbol_stub 0x19576c 0
> __picsymbolstub1 0x19576c 0x1580
> __cstring 0x196cec 0x12734
> __literal4 0x1a9420 0x18
> __literal8 0x1a9438 0x118
> __const 0x1a9550 0x1a80
> __eh_frame 0x1aafd0 0x38
> 2 LC_SEGMENT 0x214 __DATA 0x1ac000 0x448000
> __data 0x1ac000 0xa450
> __la_symbol_ptr 0x1b6450 0x2b0
> __nl_symbol_ptr 0x1b6700 0x9b0
> __dyld 0x1b70b0 0x1c
> __const 0x1b70cc 0x2264
> __bss 0x1b9330 0x3f78
> __common 0x1bd2b0 0x436a94
> 3 LC_SEGMENT 0x7c __DATA 0x5f4000 0x1fbb8000
> __data 0x5f4000 0x3d0000
> 4 LC_SEGMENT 0x38 __LINKEDIT 0x3fd64000 0xe2000
> 5 LC_LOAD_DYLINKER 0x1c
> 6 LC_LOAD_DYLIB 0x30
> 7 LC_LOAD_DYLIB 0x34
> 8 LC_SYMTAB 0x18
> 9 LC_DYSYMTAB 0x50
> 10 LC_TWOLEVEL_HINTS 0x10
> 11 LC_UNIXTHREAD 0xb0
> --- Load Commands written to Output File ---
> Writing segment __PAGEZERO at 0 - 0 (sz: 0)
> Writing segment __TEXT at 0 - 0x1ab000 (sz: 0x1ab000)
> Writing segment __DATA at 0x1ab000 - 0x5f3000 (sz: 0x448000)
> section __data at 0x1ab000 - 0x1b5450 (sz: 0xa450)
> section __la_symbol_ptr at 0x1b5450 - 0x1b5700 (sz: 0x2b0)
> section __nl_symbol_ptr at 0x1b5700 - 0x1b60b0 (sz: 0x9b0)
> section __dyld at 0x1b60b0 - 0x1b60cc (sz: 0x1c)
> section __const at 0x1b60cc - 0x1b8330 (sz: 0x2264)
> section __bss at 0x1b8330 - 0x1bc2a8 (sz: 0x3f78)
> section __common at 0x1bc2b0 - 0x5f2d44 (sz: 0x436a94)
> Writing segment __DATA at 0x5f3000 - 0x9fc000 (sz: 0x409000)
> Writing segment __LINKEDIT at 0xdcc000 - 0xead4d8 (sz: 0xe14d8)
> Writing LC_LOAD_DYLINKER command
> Writing LC_LOAD_DYLIB command
> Writing LC_LOAD_DYLIB command
> Writing LC_SYMTAB command
> Fixed up 0/17 external relocation entries in data segment.
> Writing LC_DYSYMTAB command
> Writing LC_TWOLEVEL_HINTS command
> Writing LC_UNIXTHREAD command
> 16 unused bytes follow Mach-O header
> Bob-Boyers-Computer:~ boyer$ ls -l foo
> -rwxr-xr-x 1 boyer boyer 15389912 11 Aug 16:51 foo
> Bob-Boyers-Computer:~ boyer$ gdb foo
> GNU gdb 5.3-20030128 (Apple version gdb-309) (Thu Dec 4 15:41:30 GMT 2003)
> Copyright 2003 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for details.
> This GDB was configured as "powerpc-apple-darwin".
> Reading symbols for shared libraries ... done
> (gdb) run
> Starting program: /Users/boyer/foo
> Reading symbols for shared libraries .. done
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> 0xffff8660 in __bzero ()
> (gdb)
>
>
>
--
Camm Maguire address@hidden
==========================================================================
"The earth is but one country, and mankind its citizens." -- Baha'u'llah
| [Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Gcl-devel] Re: SGC/SAVE-SYSTEM Bug in Apple MacIntosh Version of GCL, MacOS 10.3.4,
Camm Maguire <=