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Re: expr error

On 2009-5-18 11:45, Dave Korn wrote:
Lenik wrote:


Program received signal SIGSEGV, Segmentation fault.
0x05240000 in ?? ()
(gdb) bt
#0  0x05240000 in ?? ()
#1  0x69181041 in ?? () from /usr/bin/cyggmp-3.dll
#2  0x691c9000 in ?? () from /usr/bin/cyggmp-3.dll
#3  0x691ca000 in ?? () from /usr/bin/cyggmp-3.dll
#4  0x0022cdb8 in ?? ()
#5  0x61020273 in per_module::run_ctors () from /usr/bin/cygwin1.dll
#6  0x006fa418 in ?? ()
#7  0x61020340 in dll::init () from /usr/bin/cygwin1.dll
#8  0x00000000 in ?? ()
(gdb) info files

The info files output confirms there's nothing unusual loaded into the process memory. That makes me think it's not BLODA. The presence of cyggmp-3.dll in the stack trace is interesting; that stack trace looks like it's probably correct, and we are running start-up constructors.

Symbols from "/usr/bin/expr".

     0x69181000 - 0x691c4db8 is .text in /usr/bin/cyggmp-3.dll
     0x691c5000 - 0x691c8e54 is .data in /usr/bin/cyggmp-3.dll
     0x691c9000 - 0x691c9004 is .rdata in /usr/bin/cyggmp-3.dll
     0x691ca000 - 0x691ca170 is .bss in /usr/bin/cyggmp-3.dll
     0x691cb000 - 0x691cf8c6 is .edata in /usr/bin/cyggmp-3.dll
     0x691d0000 - 0x691d0410 is .idata in /usr/bin/cyggmp-3.dll
     0x691d1000 - 0x691d2680 is .reloc in /usr/bin/cyggmp-3.dll
     0x65b81000 - 0x65b86558 is .text in /usr/bin/cygintl-8.dll
     0x65b87000 - 0x65b8703c is .data in /usr/bin/cygintl-8.dll
     0x65b88000 - 0x65b88854 is .rdata in /usr/bin/cygintl-8.dll
     0x65b89000 - 0x65b895d8 is .bss in /usr/bin/cygintl-8.dll
     0x65b8a000 - 0x65b8a5ae is .edata in /usr/bin/cygintl-8.dll
     0x65b8b000 - 0x65b8b7e0 is .idata in /usr/bin/cygintl-8.dll
     0x65b8c000 - 0x65b8c460 is .reloc in /usr/bin/cygintl-8.dll
     0x67c71000 - 0x67c86fe8 is .text in /usr/bin/cygiconv-2.dll
     0x67c87000 - 0x67c87008 is .data in /usr/bin/cygiconv-2.dll
     0x67c88000 - 0x67d6481c is .rdata in /usr/bin/cygiconv-2.dll
     0x67d65000 - 0x67d654b8 is .bss in /usr/bin/cygiconv-2.dll
     0x67d66000 - 0x67d66172 is .edata in /usr/bin/cygiconv-2.dll
     0x67d67000 - 0x67d6734c is .idata in /usr/bin/cygiconv-2.dll
     0x67d68000 - 0x67d68d00 is .reloc in /usr/bin/cygiconv-2.dll

Now, this is interesting. All your DLLs are in very different places to mine, in a working instance of expr.exe:

         0x63f41000 - 0x63f84db8 is .text in /usr/bin/cyggmp-3.dll
         0x63f85000 - 0x63f88e54 is .data in /usr/bin/cyggmp-3.dll
         0x63f89000 - 0x63f89004 is .rdata in /usr/bin/cyggmp-3.dll
         0x63f8a000 - 0x63f8a170 is .bss in /usr/bin/cyggmp-3.dll
         0x63f8b000 - 0x63f8f8c6 is .edata in /usr/bin/cyggmp-3.dll
         0x63f90000 - 0x63f90410 is .idata in /usr/bin/cyggmp-3.dll
         0x63f91000 - 0x63f92680 is .reloc in /usr/bin/cyggmp-3.dll
         0x6f5c1000 - 0x6f5c6558 is .text in /usr/bin/cygintl-8.dll
         0x6f5c7000 - 0x6f5c703c is .data in /usr/bin/cygintl-8.dll
         0x6f5c8000 - 0x6f5c8854 is .rdata in /usr/bin/cygintl-8.dll
         0x6f5c9000 - 0x6f5c95d8 is .bss in /usr/bin/cygintl-8.dll
         0x6f5ca000 - 0x6f5ca5ae is .edata in /usr/bin/cygintl-8.dll
         0x6f5cb000 - 0x6f5cb7e0 is .idata in /usr/bin/cygintl-8.dll
         0x6f5cc000 - 0x6f5cc460 is .reloc in /usr/bin/cygintl-8.dll
         0x674c1000 - 0x674d6fe8 is .text in /usr/bin/cygiconv-2.dll
         0x674d7000 - 0x674d7008 is .data in /usr/bin/cygiconv-2.dll
         0x674d8000 - 0x675b481c is .rdata in /usr/bin/cygiconv-2.dll
         0x675b5000 - 0x675b54b8 is .bss in /usr/bin/cygiconv-2.dll
         0x675b6000 - 0x675b6172 is .edata in /usr/bin/cygiconv-2.dll
         0x675b7000 - 0x675b734c is .idata in /usr/bin/cygiconv-2.dll
         0x675b8000 - 0x675b8d00 is .reloc in /usr/bin/cygiconv-2.dll

So I think you must have rebased, yes? Interesting.

(gdb) info reg
eax            0x5240000    86245376
ecx            0x7c80e6cb    2088822475
edx            0x0    0
ebx            0x1    1
esp            0x22cd0c    0x22cd0c
ebp            0x22cd18    0x22cd18
esi            0x691c4da4    1763462564
edi            0x20    32
eip            0x5240000    0x5240000
eflags         0x10206    [ PF IF RF ]
cs             0x1b    27
ss             0x23    35
ds             0x23    35
es             0x23    35
fs             0x3b    59
gs             0x0    0
(gdb) info frame
Stack level 0, frame at 0x22cd10:
  eip = 0x5240000; saved eip 0x69181041
  called by frame at 0x22cd14
  Arglist at 0x22cd08, args:
  Locals at 0x22cd08, Previous frame's sp is 0x22cd10
  Saved registers:
   eip at 0x22cd0c
(gdb) quit

Those all look sensible. Right, I think I have a guess what's going on. Please try re-installing libgmp3 using setup.exe and see if it solves the problem for you. I think this might be the same as


Yes, I've rebased. After extracted cyggmp-3.dll from libgmp3-4.3, it's ok now.


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