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Zara
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 Posted: Mon Sep 25, 2006 9:06 am Post subject: Using templates with arrays |
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I have been trying to substitute the macro that comes with the
compiler with the following template:
template <typename ITEM,size_t SIZE>
inline size_t arraySize(ITEM const (&array)[SIZE]) {
return SIZE;
}
AFAIK, it is compliant with the standard, and it should work.
In fact, it works perfectly on Borland C++ 2006, but it fails on GCC
3.4.1.
Should it work, from the Standard point of view, or am i missing
something?
Best regards,
Zara |
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Zara
Guest
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| Posted: Mon Sep 25, 2006 9:10 am Post subject: Re: Using templates with arrays |
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On Mon, 25 Sep 2006 06:06:52 +0200, Zara <me_zara (AT) dea (DOT) spamcon.org>
wrote:
| Quote: | I have been trying to substitute the macro that comes with the
compiler with the following template:
template <typename ITEM,size_t SIZE
inline size_t arraySize(ITEM const (&array)[SIZE]) {
return SIZE;
}
..
In fact, it works perfectly on Borland C++ 2006, but it fails on GCC
3.4.1.
|
So sorry for this comment, it works on both. The problem comes from
using an empty intilizer list for the array:
int data[]={};
This compiles on GCC and not on BCB, but after reading the relevant
part of C++Std, it should not compile (8.5.1-4 and footnote 91). My
fault.
Regrads,
Zara |
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Rolf Magnus
Guest
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| Posted: Mon Sep 25, 2006 9:10 am Post subject: Re: Using templates with arrays |
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Zara wrote:
| Quote: | In fact, it works perfectly on Borland C++ 2006, but it fails on GCC
3.4.1.
So sorry for this comment, it works on both. The problem comes from
using an empty intilizer list for the array:
int data[]={};
This compiles on GCC and not on BCB, but after reading the relevant
part of C++Std, it should not compile (8.5.1-4 and footnote 91).
|
My guess is that you forgot to turn on all the warning options for gcc. |
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Guest
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| Posted: Mon Sep 25, 2006 9:10 am Post subject: Re: Using templates with arrays |
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Zara wrote:
| Quote: | I have been trying to substitute the macro that comes with the
compiler with the following template:
template <typename ITEM,size_t SIZE
inline size_t arraySize(ITEM const (&array)[SIZE]) {
return SIZE;
}
AFAIK, it is compliant with the standard, and it should work.
In fact, it works perfectly on Borland C++ 2006, but it fails on GCC
3.4.1.
|
The code is fine and it is a very common teqnique used for getting size
of an array.
| Quote: |
Should it work, from the Standard point of view, or am i missing
something?
Best regards,
Zara |
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| Back to top |
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Zara
Guest
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| Posted: Mon Sep 25, 2006 9:10 am Post subject: Re: Using templates with arrays |
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On Mon, 25 Sep 2006 07:32:26 +0200, Rolf Magnus <ramagnus@t-online.de>
wrote:
| Quote: | Zara wrote:
In fact, it works perfectly on Borland C++ 2006, but it fails on GCC
3.4.1.
So sorry for this comment, it works on both. The problem comes from
using an empty intilizer list for the array:
int data[]={};
This compiles on GCC and not on BCB, but after reading the relevant
part of C++Std, it should not compile (8.5.1-4 and footnote 91).
My guess is that you forgot to turn on all the warning options for gcc.
|
[OT]
I do use:
-pedantic -pedantic-errors -Wall -Werror -std=c++98
It seems ther is no diagnostic for this error.
[OT] |
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