In this section:

Overview

This error is generated whenever an uninitialized pointer is passed as an argument to a function which expects an array parameter.

Code	Description	Enabled	Reported
PARM_UNINIT_PTR	Array parameter is an uninitialized pointer		Runtime

 

Problem

The following code passes the uninitialized pointer a to routine foo.

/*
 * File: parmuptr.c
 */
char foo(a)
	char a[10];
{
	return a[0];
}
main()
{
	char *a;

	foo(a);
	return (0);
}

Diagnosis at Runtime

[parmuptr.c:5] **PARM_UNINIT_PTR**
>>		 {
Array parameter is uninitialized pointer: a
Stack trace where the error occurred:
	foo() parmuptr.c, 5
	main() parmuptr.c, 14

• Line 2: Source line at which the problem was detected.
• Line 3: Description of the problem and the argument that is in error.
• Line 5: Stack trace showing the function call sequence leading to the error

Repair

This problem is usually caused by omitting an assignment or allocation statement that would initialize a pointer. The code given, for example, could be corrected by including an assignment as shown below.

/*
* File: parmuptr.c (Modified)
*/
...
main()
{
	char *a, b[10];
	a = b;
	foo(a);
}