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stack overflow exception

 
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stack overflow exception
prads
post 16 Feb, 2008 - 02:13 PM
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Hello,
When i execute my code on Visual C++ 2005, i get the following error:
An unhandled exception of type 'System.StackOverflowException' occurred and then points to this part of my code.

CODE


void xcorr(double bits[], int preamble_ms[], int bit_count, int end_of_bits)
{
    double extPreambles[37000];

    for( unsigned long int i=0; i<160; i++)
        extPreambles[i]=preamble_ms[i];
    for( unsigned long int i=160; i<37000; i++)
        extPreambles[i]=0;
// more statements
//more statements
}


Can somebody help me debug this.
Thanks,
prads
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Nayana
post 16 Feb, 2008 - 07:06 PM
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I think the root problem is sometime before that.

Do you have a stack trace?
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NickDMax
post 16 Feb, 2008 - 08:33 PM
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generally speaking "stackoverflow" is caused by:

#1 Overuse of large local variables
#2 Overuse of or runaway recursion.

you have allocated a large array double extPreambles[37000]; in the local scope so this is eating up stackspace for each call to this function (note when the function exits the memory is free to be used again).

If this function is called recursively, or if you have allocated other large arrays in functions that call this function perhaps you should look into using some dynamic memory.
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