QA·C Help - 3217

	3217	Address of automatic object exported to a pointer with linkage or wider scope.

Pointers		REFERENCE - ISO:C90-6.1.2.4 Storage Durations of Objects

The address of an automatic object has been assigned to a pointer which has linkage or wider scope. This is dangerous. When the local object goes out of scope, the value obtained by dereferencing the pointer will be undefined. Perhaps this object needs to be declared with static storage duration ?

For example:


/*PRQA S 2017,3408,3447 ++*/

extern int* pi;

void foo(void)
{
    int a;
    pi = &a;                    /* Message 3217 */
}

See also:

3225 Address of automatic object exported using a function parameter.
3230 Address of automatic object assigned to local pointer with static storage duration.
4140 Address of automatic object exported in function return value.

Personality Groups | Glossary | Message Index

Contents