EXPR_UNINIT_PTR
Expression uses uninitialized pointer
Problem
Diagnosis (at runtime)
Repair

EXPR_UNINIT_PTR

Expression uses uninitialized pointer

This error is generated whenever an expression operates on an uninitialized pointer.

Problem

The following code uses an uninitialized pointer.

	1:	/*
	2:	 * File: expuptr.c
	3:	 */
	4:	main()
	5:	{
	6:		char *a, b[10], c[10];
	7:
	8:		if(a > b) 
	9:		     a = b;
	9:		return (0);
	10:	}

Diagnosis (at runtime)

1.	[expuptr.c:8] **EXPR_UNINIT_PTR**
	>> 		if (a > b)
	
2.		Expression uses uninitialized pointer: a > b

3.		Stack trace where the error occurred:
			main() expuptr.c, 8

1. Source line at which the problem was detected.
2. Description of the problem and the expression that is in error.
3. Stack trace showing the function call sequence leading to the error.

Repair

This error is normally caused by omitting an assignment statement for the uninitialized variable. The example code can be corrected as follows:

	1:	/*
	2:	 * File: expuptr.c (modified)
	3:	 */
	4:	main()
	5:	{
	6:		char *a, b[10], c[10];
	7:
	8:		a = c;
	9:		if(a > b)
	10:		      a = b;
	11:		return (0);
	12:	}

EXPR_NULL

EXPR_UNRELATED_PTRCMP