ARM Technical Support Knowledge Articles

ACCESSING A STRUCTURE VIA A POINTER

Applies to: C51 C Compiler

Answer


Information in this article applies to:


SYMPTOMS

If I declare a structure called foo then declare a pointer to foo called foo_ptr I am then able to access members of the structure via the pointer using the '.' operator. For example:

foo_ptr = &foo;    // initialize pointer to a structure

foo_ptr->x = 3;    // correct member accessing
foo_ptr.x = 3;     // this also works but it should generate an error

RESOLUTION

This is a known problem in C51 V5.x. It has been corrected in C51 V6.x (see below). If you still use C51 V5.x, care must be taken when accessing structures using pointers that the correct operator is used (->).

SEE ALSO

Article last edited on: 2000-03-05 00:00:00

Rate this article

[Bad]
|
|
[Good]
Disagree? Move your mouse over the bar and click

Did you find this article helpful? Yes No

How can we improve this article?

Link to this article
Copyright © 2011 ARM Limited. All rights reserved. External (Open), Non-Confidential