Mail Archives: cygwin/2000/11/13/21:29:36
On Mon, Nov 13, 2000 at 08:32:28PM -0500, Charles Wilson wrote:
>Christopher Faylor wrote:
>>
>> On Mon, Nov 13, 2000 at 01:55:00AM -0500, Charles Wilson wrote:
>> >Christopher Faylor wrote:
>> >> >I got a popup saying "Program received signal SIGSEGV, Segmentation fault"
>> >> >Stack window shows "_size_of_stack_reserve__"
>> >>
>[snip]
>> >
>> >That's pretty much it: _size_of_stack_reserve__ is the only thing in the
>> >stack window. As best I can figure, my xemacs whines before it really
>> >gets started. The address associated with it is: 0x6106fb17. stackdump
>> >generated after "c"ontinuing past the SIGSERV:
>>
>> All of the addresses below are in cygwin. If you build a debugging
>> version of the DLL it might point to the problem when you run gdb.
>> Maybe it's in cygwin.
>>
>> cgf
>>
>
>Okay, here's the results from XEmacs-21.2.36 (tarball, not from CVS)
>built under a latest-CVS-cygwin-debuggable kernel. I apologize for not
>single-stepping this and investigating more thoroughly, but I've got a
>bunch of papers to grade tonight; I won't be able to return to this
>until tomorrow night at the earliest, but I figured I post my very
>preliminary experience
I really need to see a real stack trace to debug this. From what you've
sent, it seems to me that this SIGSEGV has occurred in a process that
was invoked as a child of a shell. That is counter to your original
bug report so something is screwy somewhere.
Are you able to run anything with this DLL at all? Is the gdb you
are using running the cygwin that you've built?
cgf
>At the time of the crash, the stack contains:
>
>cygwin_crt0
>dll_crt0(per_process *)
>_dll_crt0
>dll_crt0_1(void)
>pinfo_init(char **, int)
>environ_init(char **, int)
>posify(char **, char const *)
>getwinenv(char const *, char const *)
>getenv
>my_findenv(char const *, int *)
>strncmp
>
>SIGSERV occurs at line 119 of strncmp.c ( newlib/libc/string/ ?)
>
>local variables window contains:
> s1 (char *) 0x12021604 <Address 0x12021604 out of bounds>
> s2 (char *) 0x61007432 "TEMP="
> n 3
> s1 (char *) 0x12021604 <Address 0x12021604 out of bounds>
> s2 (char *) 0x61007432 "TEMP="
> n 3
> a1 (a structure) (long unsigned int *) 0x61007436
> a2 (a structure) (long unsigned int *) 0x4
>
>stackdump is:
>
>Exception: STATUS_ACCESS_VIOLATION at eip=6106FBFB
>eax=00000004 ebx=61007436 ecx=00000003 edx=12021604 esi=61007432
>edi=00000004
>ebp=0288F8C8 esp=0288FD64
>program=D:\cygwin\usr\local\bin\xemacs-21.2-b36.exe
>cs=001B ds=0023 es=0023 fs=0038 gs=0000 ss=0023
>Stack trace:
>Frame Function Args
>0288F8C8 6106FBFB (00000000, 00000000, 00000000, 00000000)
>0288FD70 6106FBFB (12021604, 61007432, 00000004, 610078F1)
>0288FDA0 61007908 (61007432, 0288FDCC, 0288FDD0, 61005FEF)
>0288FDD0 6100795A (61007432, 0A016EC0, 0288FE10, 6100770C)
>0288FE10 61007726 (0A016EC0, 00000000, 0288FE50, 61023F1F)
>0288FE50 6100781C (0A013070, 0A016EC5, 00000005, 61030CF4)
>0288FEA0 610087B3 (00000000, 00000064, 6100D73D, 610032F0)
>0288FEC0 61030F3B (00000000, 00000000, 0288FF10, 610032F8)
>0288FF10 61003356 (00000000, 025BA960, 00000246, 8052A98F)
>0288FF40 610038C5 (0043CE48, 025BA960, 81B2EAE0, 80499AD6)
>0288FF60 61003904 (00000000, 00000000, 00780018, 00000002)
>0288FF90 0057B143 (0043CE48, 00000000, 80100000, BEA6CD00)
>0288FFC0 0040103D (025BA960, 00000045, 7FFDF000, 025C0000)
>0288FFF0 77E992A6 (00401000, 00000000, 000000C8, 00000100)
>End of stack trace
>
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