Re: [Tinycc-devel] Empy preprocessor lexeme bug

[Herman ten Brugge]

I just pushed a fix for this.

    Herman

On 5/3/21 10:04 AM, Christian Jullien wrote:
> Indeed, I can reproduce with mob with this snippet:
>
> #include <stdio.h>
>
> #define CALL(f, ...) f(__VA_ARGS__)
> #define CONST()      123
>
> int
> main() {
>          printf("%d\n", CALL(CONST, ));
>
> }
>
> It works with clang and gcc but fails with tcc
> [jullien@fedora64 ~]$ clang foo.c && ./a.out
> 123
> [jullien@fedora64 ~]$ gcc foo.c && ./a.out
> 123
> [jullien@fedora64 ~]$ tcc -v
> tcc version 0.9.27 - 3564c47 (x86_64 Linux)
> [jullien@fedora64 ~]$ tcc foo.c && ./a.out
> foo.c:11: error: macro 'CONST' used with too many args
>
> C.
>
>
> -----Original Message-----
> From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=orange.fr@nongnu.org] On 
> Behalf Of Christian Jullien
> Sent: Sunday, May 02, 2021 18:44
> To: tinycc-devel@nongnu.org
> Subject: Re: [Tinycc-devel] Empy preprocessor lexeme bug
>
> Hi it looks you're not using mod and 0.9.27 is quite old.
> Now mob gives you short git hash code like:
> $ tcc -v
> tcc version 0.9.27 - 9b76a64 (ARM eabihf Linux)
>
> Can you reproduce this with mod?
> If you do, can you send us a minimal test case that exhibits the bug?
> Does is also fails if you rename CONST => MYCONST as CONST is sometimes also 
> defined by some includes/modules.
>
> C.
>
>
> -----Original Message-----
> From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=orange.fr@nongnu.org] On 
> Behalf Of Temirkhan Myrzamadi
> Sent: Sunday, May 02, 2021 15:49
> To: tinycc-devel@nongnu.org
> Subject: [Tinycc-devel] Empy preprocessor lexeme bug
>
> Take a look at the following code:
>
> ```
> #define CALL(f, ...) f(__VA_ARGS__)
> #define CONST()      123
>
> // error: macro 'CONST' used with too many args
> CALL(CONST, )
> ```
>
> But `CONST()` work as expected. I think it's a bug because both
> `CONST()` and `f(__VA_ARGS__)` are identical calls, where
> `__VA_ARGS__` stands for the empty preprocessor lexeme, as in
> `CONST()`.
>
> ```
> $ tcc -v
> tcc version 0.9.27 (x86_64 Linux)
> ```
>
> (I am not sure where to post bugs, please let me know if this isn't the place.)
>
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