Mail Archives: djgpp/1996/12/15/17:39:43
Alaric Dailey writes:
>context.c: In function `go_deep':
>context.c:34 warning: function returns address of local variable
>
>the code it is complaining about is as follows -
>
>static char *go_deep(void)
>/*
> * Mark an area deep in the stack
> */
>{
>int i;
>
> return((char*) &i);
>}
This is a valid warning, but one that you can probably ignore in this
context. Normally returning a pointer to a local variable would be a
mistake, since the variable 'i' exists on the stack, and as soon as
go_deep() exits it will cease to exist (the stack space will be reused
for something else, so the pointer will be meaningless). Judging from
the comment, though, and from the fact that you say this came from a
multitasking package, it looks as if it is the address, rather than the
value, that is required, in which case the code is probably correct and
you can just ignore the warning.
/*
* Shawn Hargreaves - shawn AT talula DOT demon DOT co DOT uk - http://www.talula.demon.co.uk/
* Ghoti: 'gh' as in 'enough', 'o' as in 'women', and 'ti' as in 'nation'.
*/
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