Re: C/C++ Option to Initialize Variables?

[Alec Teal <a dot teal at warwick dot ac dot uk>]

On 18/02/13 11:40, Jeffrey Walton wrote:
> Hi All,
>
> http://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html#C-Dialect-Options
>
> Is there an option to initialize variables to known values in a C/C++ program?
>
> My use case is 'debug' builds and finding use of uninitialized values
> that get lucky by being 0 most of the time. For example:
>
> void DoSomeithWithFoo(FOO** ppf) {
>    if(ppf && *ppf == NULL) {
>      *ppf = new FOO;
>      ...
>    }
> }
>
> FOO* p;
> DoSomeithWithFoo(&p);
>
> So I would like something that initializes to known, but non-NULL,
> such as 0xCDCDCDCD or 0xFDFDFDFD (similar to Visual Studio behavior).
>
> Jeff
Probably not, put =0, if I say "int x;" I am just saying there is an 
int, it's name is x, deal with it. I may assign to it later, sticking =0 
at the end implicitly wouldn't be good for anything really.
However! calloc initializes the memory to zero change malloc(size to 
calloc(1,size and you're done.

Does that help?

Alec