Add detection for C++11 noexcept

The Q_COMPILER_NOEXCEPT feature indicates whether this compiler has
support for noexcept. Note that the GCC C++11 status page does not
list this feature, but investigation into the source code as well as
testing reveals it's supported since GCC 4.6.

Also add Q_DECL_NOEXCEPT, to be used to declare that a function throws
no exceptions, and Q_DECL_NOEXCEPT_EXPR(x), which declares that the
function throws no exceptions if x evaluates to true. In C++98 mode,
these macros expand to empty -- the old C++98 and C++03 exception
specification is deprecated and considered harmful.

Change-Id: Ic84901d13eceb06dcc7f025a4b7fc8b250769be9
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>

0 files changed, 0 insertions, 0 deletions