HP C B.11.11.16 Release Notes

HP C/ANSI C Release Notes

New Features in Version B.11.11.08

Chapter 1 15

__typeof__ (*x) y[4];

This declares y as an array of pointers to characters:

__typeof__(__typeof__(char *)[4]) y;

__restrict__ Keyword

This keyword can be used to indicate to the optimizer that the associated variable declared

with this qualiﬁer will not have aliases (using pointers). This will help in better code

optimization.

NOTE __restrict__ qualiﬁer can only be used with pointers.

Examples:

int a = 10;

int *__restrict__ b = &a;

__volatile__ Keyword

This is equivalent to the volatile keyword.

Usage:

__volatile__ int var;

C99 Mode with -AC99 Option

This option needs to be used in order to use the C99 speciﬁc features. For example, it enables

keywords like restrict, and typeof to be recognized. (Without this option, the keywords

__restrict__ and __typeof__ need to be used).

+We[n1,n2,...,nN] Option to Flag Warnings as Errors

Using this option causes the compiler warnings n1, n2, ..., nN to be converted into error

messages. If no numbers are speciﬁed, then most warnings, except a selected few, are

converted into errors.