Jakub Jelinek wrote:
On Fri, Jan 04, 2008 at 11:13:46AM +0100, Hans de Goede wrote:
This is bad, as it breaks compatibility with including .c header files,
really bad! Tom? Jakub?
C and C++ are different languages, there are many things valid in C and
invalid in C++ and vice versa. extern "C" is just a linkage thing, doesn't
magically change the source language temporarily to C.
So, if you want to include some header in C++, that header needs to be
includable in C++, i.e. must use the common subset of C and C++.
That includes stuff like not using C++ keywords (new, delete, ...),
adding casts where C++ doesn't allow implicit casting but C does,
and among yet other things for functions without arguments using type fn ();
or type fn (void), but not typedef void something; ... type fn (something);
in prototypes or fn definitions.
Well,
I for one consider this a bug of C++, but I guess arguing about this is
useless, so I'll just go and patch alleggl to fix this.
Regards,
Hans
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