C/C++

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stdlib qsort()

Last post by pustovetov « Tue Dec 10, 2024 3:31 am
Replies: 1
by mike632t » Mon Dec 09, 2024 7:29 pm

While just messing about with different sorting algorithms (mostly as an exercise in pointers) I decided to try comparing their efficiency by keeping...

1 Replies

76 Views

Last post by pustovetov
Tue Dec 10, 2024 3:31 am
Minor surprise with C RTL in VMS 9.2-3

Last post by pustovetov « Tue Dec 10, 2024 2:16 am
Replies: 4
by jonesd » Mon Dec 09, 2024 2:17 pm

VMS 9.2-3 broke my web server (OSU 3.17), causing it to crash on startup. The issue was difficult to track down, but turned out to be a call to...

4 Replies

132 Views

Last post by pustovetov
Tue Dec 10, 2024 2:16 am
poll unable to access stdin on VMS

Last post by frenchie68 « Fri Dec 06, 2024 9:38 am
Replies: 18
by greg@tssolutions.com.au » Sun Aug 04, 2024 11:40 pm
1

2
The following works fine on Linux but not VMS
VSI C x86-64 V7.5-009 (GEM 50XBR) on OpenVMS x86_64 V9.2-2

#include
#include
#include
#include...
18 Replies

7166 Views

Last post by frenchie68
Fri Dec 06, 2024 9:38 am
Continuing woes when mixing C and C++ code

Last post by arne_v « Thu Dec 05, 2024 1:02 pm
Replies: 11
by mberryman » Tue Dec 03, 2024 6:51 pm
1

2
Every package I have ported to VMS that uses C++ code either contains a mix of C and C++ routines or else the C++ routines call support libraries...
11 Replies

678 Views

Last post by arne_v
Thu Dec 05, 2024 1:02 pm
CXX and Decwindows on X86 : Runtime crash in DisplayOfScreen(screen)

Last post by joukj « Fri Nov 29, 2024 5:39 am
Replies: 2
by joukj » Wed Jun 28, 2023 10:11 am

Hi all,

If you compile with CXX and call the Decwindows DisplayOfScreen(screen) the program crashes at run time. (if compiled wit CC it works fine....

2 Replies

2191 Views

Last post by joukj
Fri Nov 29, 2024 5:39 am
Job Control on OpenVMS

Last post by joukj « Thu Nov 21, 2024 2:17 am
Replies: 9
by mythwalker » Mon Nov 18, 2024 5:07 pm

I've been attempting to port pdksh to OpenVMS.

But I am having issues reading from stdin. I've noticed that there are process mailboxes like in...

9 Replies

1335 Views

Last post by joukj
Thu Nov 21, 2024 2:17 am
problem linking c++ when compiled with 32-bit pointers

Last post by tigran.sargsyan « Tue Nov 19, 2024 8:36 am
Replies: 9
by joukj » Thu Sep 12, 2024 2:43 am

Hi all,

I use the latest field-test C++ compiler on OpenVMS 9.2-2. I encountered problems when linking a program which was compiled using 32-bit...

9 Replies

2688 Views

Last post by tigran.sargsyan
Tue Nov 19, 2024 8:36 am
does cc for x86 support asm ?

Last post by jreagan « Tue Oct 15, 2024 12:05 am
Replies: 19
by crgnz » Sat May 18, 2024 6:00 am
1

2
Sorry if this is more of a porting from unix question rather than a specific DEC C for x86 query but I'll ask anyway:

I'm trying to port this...
19 Replies

16040 Views

Last post by jreagan
Tue Oct 15, 2024 12:05 am
CXX compiler abort while building xpdf

Last post by jreagan « Wed Aug 21, 2024 10:14 am
Replies: 4
by mberryman » Tue Aug 13, 2024 11:12 am

While trying to build xpdf v3.04 I get the following error (same issue on both V9.2-2 and E9.2-3). There are no errors when building on Alpha or...

4 Replies

2264 Views

Last post by jreagan
Wed Aug 21, 2024 10:14 am
function argument declared volatile double broken

Last post by arne_v « Wed Aug 07, 2024 3:34 pm
Replies: 8
by jonesd » Thu Jun 20, 2024 7:32 pm

Some code I'm using declares a function argument with the volatile type attribute, for reasons according to the comments:

/*
** Do one step of the...

8 Replies

4526 Views

Last post by arne_v
Wed Aug 07, 2024 3:34 pm
getname() for a template device

Last post by pustovetov « Mon Aug 05, 2024 2:26 am
Replies: 1
by greg@tssolutions.com.au » Mon Aug 05, 2024 12:24 am

example
fd=open( MPA0: ,O_RDWR,0);
getname(fd, devname);
devname wil have MPA0: not the created device name.

Would be nice if it returned the...

1 Replies

1403 Views

Last post by pustovetov
Mon Aug 05, 2024 2:26 am
x86 issues with the STL vector handling

Last post by arne_v « Thu Jul 18, 2024 2:59 pm
Replies: 11
by brianreiter » Mon Jul 15, 2024 5:04 am
1

2
Not sure of the best location for this, but:

We have an app which is a mix of Pascal and C++ code. The C++ code was originally running on a PC but...
11 Replies

4305 Views

Last post by arne_v
Thu Jul 18, 2024 2:59 pm
-LOADER-E-BADSVINDX when C++ compiled with /pointer=32

Last post by brianreiter « Thu Jun 20, 2024 7:40 am
Replies: 3
by brianreiter » Wed Jun 19, 2024 10:56 am

On x86 OpenVMS I've been dealing with issues between C++ 32 and 64 bit pointers. The code we have a mishmash of C, C++ and Pascal (largely Pascal)....

3 Replies

2712 Views

Last post by brianreiter
Thu Jun 20, 2024 7:40 am
Status of POSIX semaphores and shared memory

Last post by pustovetov « Mon Jun 17, 2024 7:42 am
Replies: 5
by saprykin » Thu May 16, 2024 6:17 pm

A while ago (well, like 8 years :) ), there was a discussion about POSIX semaphores in OpenVMS Alpha. It seems to be that some progress to fix the...

5 Replies

4470 Views

Last post by pustovetov
Mon Jun 17, 2024 7:42 am
sigsetjmp/siglongjmp and open file

Last post by theoldman « Fri Jun 07, 2024 6:12 pm
Replies: 11
by theoldman » Wed May 22, 2024 2:43 pm
1

2
Overview (test program attached):

1. sigsetjmp(jmpbuf,1);
2. fopen a file
3. signal(SIGALRM,TOSTMER_TRAP);
4. copy jmpbuf to static so TOSTMER_TRAP...
11 Replies

7582 Views

Last post by theoldman
Fri Jun 07, 2024 6:12 pm
Some C++/RTL questions

Last post by jreagan « Wed Jun 05, 2024 12:08 pm
Replies: 14
by mberryman » Wed Dec 27, 2023 12:51 pm
1

2
In working on the MariaDB port, I have encountered the following issues:

The mkostemp function is documented as accepting additional flags for the...
14 Replies

14146 Views

Last post by jreagan
Wed Jun 05, 2024 12:08 pm
Missing "defined" in stdlib.h on IA64?

Last post by sms « Wed May 22, 2024 6:53 pm
Replies: 2
by sms » Wed May 22, 2024 1:21 pm

ITS $ cc /version
VSI C V7.4-001 on OpenVMS IA64 V8.4-2L3

OpenSSL 3.3.0 build failed. Simple test case:

ITS $ type stdlib_xoe.c
#define...

2 Replies

16713 Views

Last post by sms
Wed May 22, 2024 6:53 pm
XML files generation

Last post by jonebanes « Sun May 19, 2024 9:35 pm
Replies: 6
by jonebanes » Sun May 19, 2024 8:58 am

I have the need to produce an XML formatted file from what is now a sequential file produced by a COBOL program. I did some cursory search and with...

6 Replies

3767 Views

Last post by jonebanes
Sun May 19, 2024 9:35 pm
lib$establish() implemented in C++ x86

Last post by jreagan « Thu May 16, 2024 10:45 am
Replies: 1
by renek » Mon May 13, 2024 7:22 am

In the release notes of the x86 C++ compiler it says: The builtin function lib$establish() is not implemented in clang.
Will it be implemented in the...

1 Replies

2934 Views

Last post by jreagan
Thu May 16, 2024 10:45 am
Inquiry to next Clang update.

Last post by soutbarr « Sat Apr 06, 2024 8:35 am
Replies: 4
by soutbarr » Mon Mar 18, 2024 9:36 am

C++23 is fast approaching. Is there any clue when vsi Clang will catch up to the standard?

4 Replies

5285 Views

Last post by soutbarr
Sat Apr 06, 2024 8:35 am
x86_64 C++ regression (UDFSYM) between Build dates 07-31-2023 and 11-28-2023?

Last post by sms « Fri Apr 05, 2024 2:52 pm
Replies: 4
by sms » Thu Apr 04, 2024 2:49 pm

Source kit:

My notes say that this all worked on VMS V9.2-1 with an older
compiler: clang version 10.0.1 (Build date: 07-31-2023). It still...

4 Replies

3455 Views

Last post by sms
Fri Apr 05, 2024 2:52 pm
LibXML2 issue

Last post by hb « Thu Mar 28, 2024 7:38 pm
Replies: 4
by rodprince » Thu Mar 28, 2024 11:24 am

This issue exists on HPE I64 C Compiler and VSI x86 C Compiler. I have to assume its actually working as intended and my limited C skills are not...

4 Replies

4113 Views

Last post by hb
Thu Mar 28, 2024 7:38 pm
CXX on X86 : LLVM ERROR: out of memory

Last post by joukj « Wed Mar 20, 2024 11:23 am
Replies: 12
by joukj » Tue Sep 12, 2023 7:17 am
1

2
Hi I get the following:

rumba-jj) cxx/vers
clang version 10.0.1 (git@bitbucket.org:vms_software/llvm-10.0.1.git 1944c289616...
12 Replies

32557 Views

Last post by joukj
Wed Mar 20, 2024 11:23 am
C++ not working

Last post by sms « Tue Mar 19, 2024 9:56 pm
Replies: 6
by thorleif » Tue Mar 19, 2024 10:30 am

I have installed c++

cxx demo.cxx
%DCL-W-IVVERB, unrecognized command verb - check validity and spelling
\CXX\

Thanks
Thorleifur

6 Replies

4654 Views

Last post by sms
Tue Mar 19, 2024 9:56 pm
boost::lexical_cast

Last post by joukj « Mon Mar 18, 2024 4:16 am
Replies: 3
by ofm » Mon Sep 13, 2021 6:08 am

Hi,
This doesn't compile,

#define __USE_STD_IOSTREAM
#include
#include
int main(int argc, char** argv) {
std::string tmp = boost::lexical_cast...

3 Replies

11542 Views

Last post by joukj
Mon Mar 18, 2024 4:16 am

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