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Chapter 1 LabWindows/CVI Compiler
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National Instruments Corporation 1-9 LabWindows/CVI Programmer Reference Manual
invalid or when the arithmetic operation results in an invalid pointer expression. The
following user protection errors involve pointer arithmetic:
• Pointer arithmetic involving uninitialized pointer
• Pointer arithmetic involving null pointer
• Out-of-bounds pointer arithmetic (calculation of an array address that results in a pointer
value either before the start, or past the end of the array)
• Pointer arithmetic involving pointer to freed memory
• Pointer arithmetic involving invalid pointer
• Pointer arithmetic involving address of non-array object
• Pointer arithmetic involving pointer to function
• Array index too large
• Negative array index
Pointer Assignment (Non-Fatal)
LabWindows/CVI generates pointer assignment errors when you assign invalid values to
pointer variables. These warnings can help determine when a particular pointer becomes
invalid. The following user protection errors involve pointer assignment:
• Assignment of uninitialized pointer value
• Assignment of out-of-bounds pointer expression (assignment of an address before the
start, or past the last element, of an array)
• Assignment of pointer to freed memory
• Assignment of invalid pointer expression
Pointer Dereference Errors (Fatal)
Dereferencing of invalid pointer values is a fatal error because it can cause a memory fault or
other serious problem. The following user protection errors involve pointer dereferencing:
• Dereference of uninitialized pointer
• Dereference of null pointer
• Dereference of out-of-bounds pointer (dereference using a pointer value before the start,
or past the end, of an array)
• Dereference of pointer to freed memory
• Dereference of invalid pointer expression
• Dereference of data pointer for use as a function
• Dereference of function pointer for use as data
00ProRef.book : 06chap01.fm Page 9 Monday, March 9, 1998 3:23 PM