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Old 01-19-2005, 08:43 AM   #1
pippet
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Registered: May 2004
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segmentation fault


Hi,
I am using the gcc-3.3.3 which comes along with the FC2 release. When i tried to run a program i got a segmentation error in the following code

for(int i=0; i < temp.count; i++) {
temp.str[i] = new wchar_t[moods[i].length()]; //this will give u error for i=2
wcscpy(temp.str[i], moods[i].c_str());
}
Here moods[i].lengh() is 768 for i=2 and at that point it crashes.


bt is
0x0042cd58 in _int_malloc () from /lib/tls/libc.so.6
#1 0x0042c09d in malloc () from /lib/tls/libc.so.6
#2 0x001a43ae in operator new () from /usr/lib/libstdc++.so.5
#3 0x001a44df in operator new[] () from /usr/lib/libstdc++.so.5

What could be the problem?

pippet
 
Old 01-19-2005, 09:28 AM   #2
Quis
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Distribution: Gentoo
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is moods[i] at i=2 initialized?
Or, what is the value of moods[2].lenth?
Does gcc put out a warning?
Did you "malloc"ed temp.str?

Last edited by Quis; 01-19-2005 at 09:30 AM.
 
Old 01-19-2005, 11:19 PM   #3
pippet
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It is initailized properly. Today i again run the program(after a restart). Fro the second time it completed the exception without any error. Is there any way to trace the memory leak in the program?
 
Old 01-20-2005, 03:20 AM   #4
Quis
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You can try "valgrind" it's a useful tool to check memory assignment.

You said "It is initailized properly". Did you checked the *temp.str too?
 
Old 01-24-2005, 02:02 AM   #5
pippet
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I got it, the function moods[i].length() returns random values like 763,765 etc.
But i think malloc returns a rational value if it receives such values.
 
  


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