Question

In OSX I have the following code. Using gcc 4.0.1. I’m new to OSX development so I’m not sure what other system information would be useful here…

static int     textstrArgs[] = { 1, 1, 1 };

void func()
{
    static int first = 1;
    if (first)
    {
        first = 0;
        // stuff
    }
    /* other stuff */
}

where func() is declared as ‘extern’ and is called from another library.

The problem is that the address of ‘texstrArgs[2]’ and ‘first’ is the same. That is, when the application loads it’s putting both of these variables at the same spot in memory. When func() is called the first = 0 is clobbering the value in the static textstrArgs array.

Would could I be doing that would cause this to occur?

Thanks for any help anyone can give.

Answer 1

Just a hunch – try changing:

static int textstrArgs[] = { 1, 1, 1 };

to

static int textstrArgs[3] = { 1, 1, 1 };

One other thing – are you actually referencing textstrArgs anywhere ? If not then it may be that it’s getting optimised away.