Hi Mark,

 CM>I am trying to compile the following code, but I ALWAYS gives me a
 CM>General Protection fault at the SPRINTF call:

 CM>      char    String[255];

 MK>           if(InstanceData.ptrUserProfile)
 CM>        sprintf(String,"Your user number is %lx",
 MK>                     InstanceData.ptrUserProfile->ulUserNumber);
 MK>           else
 MK>             sprintf(String,"NULL pointer line %lu,
dufus!",__LINE__);

 MK> Be sure to initialize InstanceData.ptrUserProfile to NULL and
 MK> reinitialize to NULL if what it points at becomes invalid (like if you
 MK> free it).

Actually, it turned out to be a very strange problem.  I was calling a
function long before this code is run, that assignes a character to a
variable defined as
        char Temp;

Well, if I simply recode this to be:
        char Temp[255];

The problem with sprintf many, many lines, of code, and several functions
later, disappears.

Could this be a C/SET bug, or just a very odd artifact of what I was doing?

Either way, problem solved.  Thanks for your suggestion.

I hope my little experience can help someone someday.

Take care,
    Chris


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