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Re: Why does 'gcc -Wall' complain about void main() ?

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On 11/1/2019 3:45 PM, David Brown wrote:
> On 01/11/2019 15:22, DFS wrote:
>> gcc 9.1.0 on MSYS2
>>
>> combinearrays.c:14:6: warning: return type of ‘main’ is not ‘int’ [-Wmain]
>>     14 | void main() {
>>        |      ^~~~
>>
> 
> That is because the main should be declared as either:
> 
> 	int main(void);
> 
> 	int main(int argc, char *argv[]);
> 
> or an implementation-specific extension (*nix systems often allow a
> third "envp" pointer).

And version 0.01 of the linux kernel had:

void main(void)      /* This really IS void, no error here. */
{                    /* The startup routine assumes (well, ...) this */

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Why does 'gcc -Wall' complain about void main() ? DFS <nospam@dfs.com> - 2019-11-01 10:22 -0400
  Re: Why does 'gcc -Wall' complain about void main() ? David Brown <david.brown@hesbynett.no> - 2019-11-01 15:45 +0100
    Re: Why does 'gcc -Wall' complain about void main() ? Manfred <noname@add.invalid> - 2019-11-01 17:57 +0100
      Re: Why does 'gcc -Wall' complain about void main() ? Keith Thompson <kst-u@mib.org> - 2019-11-01 10:31 -0700
        Re: Why does 'gcc -Wall' complain about void main() ? Manfred <noname@add.invalid> - 2019-11-01 21:00 +0100
      Re: Why does 'gcc -Wall' complain about void main() ? David Brown <david.brown@hesbynett.no> - 2019-11-01 21:20 +0100
  Re: Why does 'gcc -Wall' complain about void main() ? Keith Thompson <kst-u@mib.org> - 2019-11-01 10:25 -0700

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