_resetstkoflw
Visual Studio .NET 2003
Recovers from stack overflow.
int _resetstkoflw ( void );
Return Value
Nonzero if the function succeeds, zero if it fails.
Remarks
The _resetstkoflw function recovers from a stack overflow condition, enabling a program to continue instead of failing with a fatal exception error. If you don't call _resetstkoflw, there is no guard page after the previous exception and the next time there is a stack overflow there will be no exception at all; the process will simply terminate without warning.
This function should only be called from a __try block.
Requirements
| Routine | Required header | Compatibility |
|---|---|---|
| _resetstkoflw | <malloc.h> | Win 98, Win Me, Win NT, Win 2000, Win XP |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
Example
// crt_resetstkoflw.c
/* Launch program with and without arguments to observe */
/* the difference made by calling _resetstkoflw() */
#include <malloc.h>
#include <stdio.h>
#include <windows.h>
void recursive(int recure)
{
_alloca(2000);
if (recure)
recursive(recure);
}
int main(int ac)
{
int i = 0;
int recure = 1, result = 0;
for (i = 0 ; i < 10 ; i++)
{
printf("loop #%d\n", i + 1);
__try
{
recursive(recure);
}
__except(GetExceptionCode() == STATUS_STACK_OVERFLOW)
{
if (ac >= 2)
{
puts("resetting stack overflow");
result = _resetstkoflw();
}
}
if (!result)
return 3;
}
return 0;
}
Sample Output
With no program arguments:
loop #1
With program arguments:
loop #1 resetting stack overflow loop #2 resetting stack overflow loop #3 resetting stack overflow loop #4 resetting stack overflow loop #5 resetting stack overflow loop #6 resetting stack overflow loop #7 resetting stack overflow loop #8 resetting stack overflow loop #9 resetting stack overflow loop #10 resetting stack overflow
