• John Reimer (40/40) Feb 20 2005 OS:
• zwang (2/5) Feb 20 2005 dmd win32 fails too.
• Kris (4/44) Feb 23 2005 consts are sometimes astonishingly weak in D. I bet it would be fine if ...
• John Reimer (5/11) Feb 23 2005 Thanks, Kris. If there's so much trouble with const's, I think this
• kris (6/18) Feb 23 2005 No question about it :)
• =?ISO-8859-1?Q?Thomas_K=FChne?= (44/44) Mar 11 2005 -----BEGIN PGP SIGNED MESSAGE-----

John Reimer <brk_6502 yahoo.com> writes:

OS:         
Gentoo Linux with Kernel 2.6

D Compiler: 
dmd version 0.113

CODE:





















OUTPUT:
test4(8):50*50 is not an expression
test4(9):a1 - 1 * a2 - 1 is not an expression
Segmentation fault

PROBLEM:

The compiler balks on calculated constant expressions. In arrays 1-3, take
out the "4*" in the array dimension to get a different set of errors (no
segfault).  Comment out the individual array declarations to get more
complaints from the compiler.  Furthermore, remove all array declarations
to get /no/ complaints from the compiler. The compiler error only shows up
when you attempt to use the constants.

Since const values are the only replacement solution for the C
preprocessor "#define", why are these expressions incalculable?

Win32 version not tested!

- John R.

zwang <nehzgnaw gmail.com> writes:

John Reimer wrote:
 Win32 version not tested!
 
 - John R.

dmd win32 fails too.

Kris <Kris_member pathlink.com> writes:

In article <pan.2005.02.20.14.41.58.234018 yahoo.com>, John Reimer says...
OS:         
Gentoo Linux with Kernel 2.6

D Compiler: 
dmd version 0.113

CODE:





















OUTPUT:
test4(8):50*50 is not an expression
test4(9):a1 - 1 * a2 - 1 is not an expression
Segmentation fault

PROBLEM:

The compiler balks on calculated constant expressions. In arrays 1-3, take
out the "4*" in the array dimension to get a different set of errors (no
segfault).  Comment out the individual array declarations to get more
complaints from the compiler.  Furthermore, remove all array declarations
to get /no/ complaints from the compiler. The compiler error only shows up
when you attempt to use the constants.

Since const values are the only replacement solution for the C
preprocessor "#define", why are these expressions incalculable?

Win32 version not tested!

- John R.

consts are sometimes astonishingly weak in D. I bet it would be fine if you used
enum instead

- Kris

John Reimer <brk_6502 yahoo.com> writes:

Kris wrote:

 consts are sometimes astonishingly weak in D. I bet it would be fine if you
used
 enum instead
 
 - Kris
 
 

Thanks, Kris.  If there's so much trouble with const's, I think this 
should be fixed.  I'll see what enum can do for me.  I guess a template 
could even be a solution, if not overkill.

- John R.

kris <fu bar.org> writes:

John Reimer wrote:
 Kris wrote:
 
 consts are sometimes astonishingly weak in D. I bet it would be fine 
 if you used
 enum instead

 - Kris

 
 Thanks, Kris.  If there's so much trouble with const's, I think this 
 should be fixed.  

No question about it :)

Frankly, I'd prefer Walter to remove const completely until he's spent 
some time thinking about how to correctly implement read-only variables, 
and the related ROM-based reference data. I doubt that will happen though.

- Kris

=?ISO-8859-1?Q?Thomas_K=FChne?= <thomas-dloop kuehne.THISISSPAM.cn> writes:

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Hash: SHA1

John Reimer wrote:
| OS:
| Gentoo Linux with Kernel 2.6
|
| D Compiler:
| dmd version 0.113
|
| CODE:




















|
| OUTPUT:
| test4(8):50*50 is not an expression
| test4(9):a1 - 1 * a2 - 1 is not an expression
| Segmentation fault

Added to DStress as
http://dstress.kuehne.cn/run/const_14.d

Thomas
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