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Programming Release Notes

6.5 Compaq C Run-Time Library

6.5.11 New LINK Command for Linking /NOSYSSHR (VAX Only)

V7.3

The LINK command for linking /NOSYSSHR on OpenVMS VAX systems is now:

$ LINK/NOSYSSHR PROG, SYS$LIBRARY:DECCRTL.OLB/INCLUDE=(CMA$TIS,CMA$TIS_VEC)/LIB

Previously, the LINK command was:

$ LINK/NOSYSSHR PROG, SYS$LIBRARY:DECCRTL.OLB/INCLUDE=CMA$TIS/LIB

6.5.12 The select Socket Function Returns Failure for Invalid File Descriptor

V7.3

The

select

function has been corrected to return failure status if either an

invalid ﬁle descriptor (

errno

set to EBADF) or a ﬁle descriptor not associated

with a socket (

errno

set to ENOTSOCK) is found in one of the speciﬁed ﬁle

descriptor sets. In either event, and in conformance with the standard,

select

now stops processing and performs no operation.

Note that failure with

errno

set to EBADF is the standard requirement for the

select

function. Failure with

errno

set to ENOTSOCK has been added as a

more informative value because currently the

select

function can operate only

on sockets.

In previous versions of the C RTL,

select

set

errno

to EBADF or ENOTSOCK

but ignored invalid ﬁle descriptors and ﬁle descriptors not associated with sockets

and continued to process the remaining valid ﬁle descriptors. You can choose this

old behavior by deﬁning the logical name DECC$SELECT_IGNORES_INVALID_

FD to any value before invoking the application.

6.6 Compaq COBOL Run-Time Library (Alpha Only)

The following sections contain release notes pertaining to the Compaq COBOL

Run-Time Library (RTL) for OpenVMS Alpha (formerly named DEC COBOL and

DIGITAL COBOL).

6.6.1 New Routines to Support Y2K Intrinsic Functions

V7.3

This RTL now provides support for ﬁve new intrinsic functions with four-digit

year formats:

YEAR-TO-YYYY

DATE-TO-YYYYMMDD

DAY-TO-YYYYDDD

TEST-DATE-YYYYMMDD

TEST-DAY-YYYYDDD

6.6.2 Performance Improvements

V7.3

The RTL performance is improved for DISPLAY redirected to a ﬁle and with

programs compiled with /MATH=CIT3 and /MATH=CIT4.

6–6 Programming Release Notes