HP C B.11.11.16 Release Notes

HP C/ANSI C Release Notes

New Features in Version B.11.11.14

Chapter 1 9

New Features in Version B.11.11.14

HP C compiler version B.11.11.14 supports the following new features:

+Onolibcalls=func1[,func2,...] Option

Now a list of function names can be speciﬁed as arguments to the +Onolibcalls option. The

function names can be given after a '=' following the +Onolibcalls option. If multiple

function names need to be speciﬁed, they can be separated by commas as shown. There can be

no intervening spaces/blanks. Multiple functions can also be speciﬁed with multiple

+Onolibcalls options.

Presently, the arguments to +Onolibcalls= can be one or more of the millicode routines

memset, memcpy, abs, and modf. Any other argument will be ignored with a warning.

This new syntax of the +Onolibcalls option allows users to selectively disable the inlining of

the speciﬁed millicode routines. Previously, it was possible to either inline all the millicode

routines (using +Olibcalls) or to disable them all (using +Onolibcalls).

Support for Unnamed Aggregates

Starting with this release, HP C supports unnamed unions and structs called Unnamed

Aggregates (UA). Unnamed unions in C are the same as C++ anonymous unions. This feature

is available with the compiler option +unnamed_aggr. Here is a simple example:

struct S {

enum Kind k; /* enum Kind defined elsewhere */

union {

int i;

double d;

}; /* An unnamed union. */

};

int main()

{

int i = 0;

double d = 0.0;