https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70476
Jiang An <de34 at live dot cn> changed:
What |Removed |Added
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CC| |de34 at live dot cn
--- Comment #12 from Jiang An <de34 at live dot cn> ---
It seems that the current specification is still broken for extern "C"
functions with internal linkage.(In reply to Maciej S. Szmigiero from comment
#8)
> Having functions with "C" language linkage (calling convention, etc) but
> internal linkage is useful for writing callbacks provided to C functions.
>
> It's not an significant issue, however, as one can get the same effect by
> declaring the callback function "static" inside an "extern C" block.
This is not so useful in practice because most compilers don't make extern "C"
and extern "C++" differentiate function types (implying calling conventions
etc.).
There's a long battle story, and the divergence between the standard and
implementations is not resolved yet. See
https://cplusplus.github.io/CWG/issues/1555.html
https://lists.isocpp.org/sg12/2020/04/0900.php
