Message-ID: <33332701.1A29@uit.net>
Date: Fri, 21 Mar 1997 18:25:37 -0600
From: Chris Larson <clarson AT uit DOT net>
MIME-Version: 1.0
Newsgroups: comp.os.msdos.djgpp
Subject: strange problem
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I'm having a strange problem with DJGPP(most likely my error).  I am
reading integer and floating point values into a structure from a text
file.  If I print the variables to the screen while still in the while()
loop that reads them in (using fscanf()and fseek()) the values print out
right, but if I print them out after exiting the while() loop they don't
retain there value(usually = 0). It also does not always work at all but
will bomb out with the following message. 

Exiting due to signal SIGSEGV
General Protection Fault at eip=000087fe
eax=00000001 ebx=0004f420 ecx=0004f300 edx=88f84d8a esi=000015aa
edi=00000033
ebp=0004f398 esp=0004f318 program=C:\ASCREAD\ASCOR.EXE
cs: sel=00af  base=825ab000  limit=0008ffff
ds: sel=00b7  base=825ab000  limit=0008ffff
es: sel=00b7  base=825ab000  limit=0008ffff
fs: sel=0087  base=000221b0  limit=0000ffff
gs: sel=00c7  base=00000000  limit=ffffffff
ss: sel=00b7  base=825ab000  limit=0008ffff
 
Call frame traceback EIPs:
  0x000087fe   __doscan_low+1710
  0x00008382   __doscan_low+562
  0x0000814b   __doscan+27
  0x00002dda   _fscanf+18
  0x00001806   _load_asc_obj_f+490, line 76 of ascor.c
  0x00001cbf   _main+43, line 141 of ascor.c
  0x000023a2   ___crt1_startup+138
 
This is what I get when I run symify.  It doesn't always bomb on the
same line but generally the traceback is always the same.
If anyone could help I would really appreciate it.

Thanks in advance - Chris.