Thread: Stack underflow

Hi, I'm trying to get some insight on what could be causing a stack underflow error. I have some code that looks like

Code:

void * func1(a_struct s)
{

 .....

 printf("s = 0x%p.\n", s);
 printf("&s = 0x%p.\n", &s);

 foo = func2(s);

 .....

 return foo;
}

void * func2(a_struct s)
{
 printf("s = 0x%p.\n", s);
 printf("&s = 0x%p.\n", &s);

 ......

return foo;
}

func1 prints out 's' just fine but in func2 I get a stack underflow when trying to print s or &s. I can tell it's an underflow from looking at the assembly. A store instruction is getting called to store a register val just before the start of the stack. This happens with any kind of reference to 's' in func2.

Anyone have any idea what could be going on?

You need to post exact code which produces the problem (not something full of .... which has in all likelyhood snipped the problem).

You also need to say which OS/Compiler you're using, and be specific (not something vague like Microsoft/Microsoft)