Re: "A diagram of C23 basic types"

David Brown <david.brown@hesbynett.no> writes:

On 09/04/2025 11:49, Michael S wrote:

[...]

Are your sure that C Standard does not allow trailing commas?
That is, they are obviously legal in initializer lists.
All compilers that I tried reject trailing comma in function calls.

...

But is it (rejection) really required by the Standard? I don't know.

>
Yes.  The syntax (in 6.5.2p1) is :

[...]

Yes, but also no.

A trailing comma in an argument list in a function call is a syntax
error, but the standard doesn't require syntax errors (or constraint
violations) to be fatal.  Rejection is required only for #error.

In most cases, most compilers do treat syntax errors as fatal, but for
example a compiler that accepts trailing commas as an extension might
produce a non-fatal warning even in conforming mode.

--
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
void Void(void) { Void(); } /* The recursive call of the void */