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c++ - 64-bit integer literals bug?

reply Mikael Klasson <Mikael_member pathlink.com> writes:
Hi,

it seems dmc just uses the lower 32 bits of my 64-bit integer literals.

long long t = 123456789012345;
gives t the value 123456789012345 mod 2^32 = 2249056121

The compiler doesn't even give a warning.

Digital Mars C/C++ Compiler Version 8.33.13n

Regards,
Mikael
Apr 05 2003
parent reply Christof Meerwald <cmeerw web.de> writes:
On Sat, 5 Apr 2003 13:34:32 +0000 (UTC), Mikael Klasson wrote:

 long long t = 123456789012345;


use
long long t = 123456789012345LL;
instead


 The compiler doesn't even give a warning.


a warning would be nice though.


bye, Christof

-- 
http://cmeerw.org                                 JID: cmeerw jabber.at
mailto cmeerw at web.de

...and what have you contributed to the Net?
Apr 05 2003
parent reply Mikael Klasson <Mikael_member pathlink.com> writes:
use
long long t = 123456789012345LL;
instead


Thanks! You just saved me a lot of hassle.

Cheers,
Mikael

P.S. God I love this compiler... It's soooo fast. :) The most annoying thing I
can think of is the 40MB(?) optlink limit on static data. No fix for that?
Apr 05 2003
next sibling parent reply "Walter" <walter digitalmars.com> writes:
"Mikael Klasson" <Mikael_member pathlink.com> wrote in message
news:b6mnsa$10ko$1 digitaldaemon.com...

 P.S. God I love this compiler... It's soooo fast. :) The most annoying


thing I

 can think of is the 40MB(?) optlink limit on static data. No fix for that?



Kinda stuck with that. Optlink is written entirely in heavilly optimized
assembler, and is a bit immune to any rewrites :-(
Apr 05 2003
parent reply Mikael Klasson <Mikael_member pathlink.com> writes:
Kinda stuck with that. Optlink is written entirely in heavilly optimized
assembler, and is a bit immune to any rewrites :-(


How about that warning for cropped 64-bit literals then? I'm certainly not used
to appending LL, and it seems like a useful warning.

Thanks anyhow,
Mikael
Apr 05 2003
parent reply "Walter" <walter digitalmars.com> writes:
"Mikael Klasson" <Mikael_member pathlink.com> wrote in message
news:b6nlpu$1mjg$1 digitaldaemon.com...

Kinda stuck with that. Optlink is written entirely in heavilly optimized
assembler, and is a bit immune to any rewrites :-(


 How about that warning for cropped 64-bit literals then? I'm certainly not


used

 to appending LL, and it seems like a useful warning.


Years ago, it used to and I removed it. I don't remember why. There was a
reason :-)
Apr 05 2003
parent "Matthew Wilson" <dmd synesis.com.au> writes:
Can we have it back? That'd be good. :)

"Walter" <walter digitalmars.com> wrote in message
news:b6nnj4$1nsg$1 digitaldaemon.com...

 "Mikael Klasson" <Mikael_member pathlink.com> wrote in message
 news:b6nlpu$1mjg$1 digitaldaemon.com...

Kinda stuck with that. Optlink is written entirely in heavilly






optimized

assembler, and is a bit immune to any rewrites :-(


 How about that warning for cropped 64-bit literals then? I'm certainly




not

 used

 to appending LL, and it seems like a useful warning.


 Years ago, it used to and I removed it. I don't remember why. There was a
 reason :-)
Apr 05 2003
prev sibling parent reply Christof Meerwald <cmeerw web.de> writes:
On Sat, 5 Apr 2003 14:06:02 +0000 (UTC), Mikael Klasson wrote:

 P.S. God I love this compiler... It's soooo fast. :) The most annoying thing I
 can think of is the 40MB(?) optlink limit on static data. No fix for that?


I am currently working on getting OpenWatcom's wlink to work with DMC. So
far, I have it mostly working (just had to fix a few incompatibilities in
wlink's OMF-file processing).

It is able to link programs with more than 40 MB static data (but the
resulting EXE-files are in this case also about 40 MB in size - I hope I can
find an easy way to fix that).

But probably the most exciting feature is that wlink can read COFF libraries
and even Microsoft's new-style COFF import libraries (so you can directly
use Microsoft's Platform SDK import libraries without having to convert
them).

I am going to release my modifications to wlink in the next few days...


bye, Christof

-- 
http://cmeerw.org                                 JID: cmeerw jabber.at
mailto cmeerw at web.de

...and what have you contributed to the Net?
Apr 06 2003
parent Christof Meerwald <cmeerw web.de> writes:
On Sun, 6 Apr 2003 13:30:11 +0000 (UTC), Christof Meerwald wrote:

 On Sat, 5 Apr 2003 14:06:02 +0000 (UTC), Mikael Klasson wrote:

 P.S. God I love this compiler... It's soooo fast. :) The most annoying thing I
 can think of is the 40MB(?) optlink limit on static data. No fix for that?




[OpenWatcom's wlink]

 It is able to link programs with more than 40 MB static data (but the
 resulting EXE-files are in this case also about 40 MB in size - I hope I can
 find an easy way to fix that).


Changing the following lines in \dm\src\core32\cinit.asm fixes the problem:

XOF            segment dword use32 public 'BSS'
;               dd      65 dup(0)          ;64 for _atexit_tbl + 1 for null ptr
               org      4 * 65
XOF            ends



 I am going to release my modifications to wlink in the next few days...


It's now available on my Web site at http://cmeerw.org/prog/owtools/


bye, Christof

-- 
http://cmeerw.org                                 JID: cmeerw jabber.at
mailto cmeerw at web.de

...and what have you contributed to the Net?
Apr 06 2003