Re: [Tinycc-devel] tcc and declaring arrays.

[Ammar James]

In sectino 6.5.7.2 of the Standard, I believe it states that variable
length arrays (VLAs) are supported as long as they are not in
file-scope.

But maybe someone can check out Example 4 and give me a better
explanation. I don't think its perfectly clear where and what I am
allowed to do. Let alone what tcc is striving to do...

Thanks.

On Wed, Jun 17, 2009 at 5:16 AM, Joshua
Phillips<address@hidden> wrote:
> Variable length arrays are valid C99.
>
> On Wednesday 17 June 2009 07:01:15 Christian Jullien wrote:
>> If tcc is supposed to compile ISO C, it is right to complain.
>> If tcc wants to compile all what gcc compiles it has to support all gcc
>> extensions as the one you're using with this sample.
>>
>> IMHO a compiler should compile all valid code as determined by a standard
>> (in our case different published versions ISO/IEC 9899 standard) and reject
>> all other forms. So, tcc does the right job in your case.
>>
>> If you're bound to a specific language extension you're also bound a
>> specific compiler and you'll easily compile your code on another compiler.
>>
>> You'd better rewrite your code so that is complies with the C standard
>> level/version you want to support.
>>
>> C.
>>
>> -----Original Message-----
>> From: address@hidden
>> [mailto:address@hidden On Behalf Of
>> Ammar James
>> Sent: Tuesday, June 16, 2009 21:54
>> To: address@hidden
>> Subject: [Tinycc-devel] tcc and declaring arrays.
>>
>> Another area where gcc compiles fine while tcc issues an error.
>>
>> Essentially:
>> int i;
>> i = strlen(s);
>> int s2[i];    //tcc doesn't like this.
>>
>> tcc's error message is: wrong3.c:9: constant expression expected
>>
>> Code attached (21 lines).
>>
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