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Date: Fri, 1 May 2009 08:57:34 -0700
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Thread-Topic: C++ incompatability, was C99: Suggestions for style(9)
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From: "Matthew Fleming" <matthew.fleming@isilon.com>
To: "FreeBSD Hackers" <freebsd-hackers@freebsd.org>
Subject: C++ incompatability, was C99: Suggestions for style(9)
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[snip exciting discussion on style]

> There are several C99 features used already, e.g. designated
initializers:
>	bla bli =3D { .blub =3D "foo", .arr[0] =3D 42 };
> Do you suggest that this should not be used, because it is
inconsistent=20
> with all the other existing compound initialisations?

Regarding this great feature of C99, sadly, it's not C++ compatible.  So
while designated initializers in a C source file are great, in a header
file they will give a compile error if included in e.g. a C++ kernel
module (which otherwise would work fine).

Actually, as a further digression, I was wondering if/when FreeBSD would
add=20

#ifdef __cplusplus
extern "C" {
#endif

to sys/sys/*.h and other headers that can be included by a kernel
module.

Thanks,
matthew