HP aC++/HP C Programmer's Guide (B3901-90036; A.06.26; September 2011)

-AP

NOTE: This option is deprecated and may not be supported in future releases.

The -AP option turns off -AA mode and uses the older C++ runtime libraries.

NOTE: This option is not supported in legacy HP C. This option is ignored with warnings

in C-mode.

-Ax

The -Ax option turns on support for several extensions introduced by the working paper

for the next C++ standard (called C++0x). The -Ax option is available only in C++

compilation mode and is binary compatible with the -AA compilation mode. See the HP

aC++/HP ANSI C Release Notes for a description of extensions supported.

+legacy_cpp

The +legacy_cpp option enables the use of cpp.ansi ANSI C preprocessor. This

option is available in C-mode only.

NOTE: This option is not normally needed and may be deprecated in future.

+legacy_v5

This option enables the use of the A.05.60 compiler. The default compiler is the A.06.00

compiler.

+tru64

This option causes return types of unprototyped functions to be treated as long, instead

of int, matching Tru64 C behavior. This can prevent segfaults in +DD64 mode, resulting

from pointer truncation, for instance:

long *a;

long sub() {

a = malloc(sizeof(long)); /* no prototype! */

*a = 1234; /* segfault if +DD64 and no +tru64 */

return *a;

}

A preferable solution is to provide the appropriate function prototypes.

Standards Related Options 103