Description of problem: 
 
gcc doesn't appear to correctly allocate memory for a variable 
 
 
Version-Release number of selected component (if applicable): 
 
gcc-3.4.2-6.fc3 
gdb-6.1post-1.20040607.43 
glibc-2.3.4-2.fc3 
 
How reproducible: 
 
I tried everything I could to get it to work.  I spent about 4 hours 
on this issue with no solution other than the one described below.  
 
 
Steps to Reproduce: 
 
<shortened code snippet begins> 
 
static int dbug12_get_reply (unsigned char *packet) 
{ 
return 5;  
} 
 
 
void dbug12_stop_reason (enum dbug12_stop *reason, int *sigrc) 
{ 
  int replyEnd;  
  unsigned char reply[254]; 
   
  // This line is needed  
  //to make the code work 
  replyEnd = 0;  
   
  // get the reply 
  replyEnd = dbug12_get_reply(reply);  
  printf("Reply is %s\n",reply);  
   
  // handle the error condition 
  // can't pass here with a zero length 
  if (replyEnd == 0) 
  ... 
<end of shortned code snippet> 
 
Problem #1:  gdb cannot find replyEnd: 
 
(gdb) whatis replyEnd  
No symbol "replyEnd" in current context. 
 
Problem #2: 
The code doesn't execute properly if I delete the "replyEnd = 0;" 
line.  Without "replyEnd = 0;" in the code, replyEnd gets an 
unalterable junk value.  With "replyEnd = 0;" in the code, replyEnd 
gets set to the return value of 5, which it should. 
 
 
I was also playing around with changing the size of the reply buffer, 
ie "reply[255]", reply[253], etc.  It didn't look like gcc was 
changing the size of the buffer on a clean build.  
 
Additional info: 
 
If the included code snippet doesn't reproduce the problem, I can 
provide the volumous code sample that does.  
 
gcc is being run from kdevelop.  The gcc command line switches used 
are -ggdb only.