Stack Overflow

[JohnsonGPS]

I created a C++ program and defined a huge struct. The struct size is about 10000*100 bytes.

I compiled the program in Borland C++ Builder6 and everything is OK. However, Visual C++.NET 2003 reported error as "Unhandled exception at ... Stack overflow". Visual C++ will not report any problem if I reduce the struct size to a much smaller one. Anybody know how to make VC++ accept huge struct and not cause stack overflow?
Thank you in advance.

My Struct Sample:

typedef struct
{
double dVarXXX[10000];
}StructYYY;

typedef struct
{
StructYYY myStructYYY[100];
}StructZZZ;

 

[Prattaratt]

I imagine you have something like this:

void SomeFunc()
{
StructZZZ Var1;
....
// do some stuff with Var1
...
return;
};

Your problem occurs because you are creating a variable that is too large for the stack, thereby causing a "stack overflow." While there should be a way to tell VC++ to create a larger stack, the more accepted method would be to create the variable using a pointer rather than on the stack, like so:

void SomeFunc()
{
// allocate memory for the var;
StructZZZ *Var1 = new(StructZZZ);
...
/* do some stuff; just remember to de-reference the structure members of Var1 with -> instead of . */
...
// remember to release the memory for the var
delete Var1;
return;
};


90% of all questions can be answer by the Help file! Try it and be amazed.

 

[JohnsonGPS]

Good idea. It solves my problem.