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AK: Add SFINAE fallback for AK C++ concepts use, for Coverity compiler

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The Coverity compiler doesn't support C++2a yet, and thus doesn't
even recognize concept keywords. To allow serenity to be built and
analyzed on such compilers, add a fallback underdef to perform
the same template restriction based on AK::EnableIf<..> meta
programming.

Note: Coverity does seem to (annoyingly) define __cpp_concepts, even
though it doesn't support them, so we need to further check for
__COVERITY__ explicitly.
This commit is contained in:
Brian Gianforcaro 2020-08-16 15:11:05 -07:00 • committed by Andreas Kling
commit ff0c7da75d
Notes: sideshowbarker 2024-07-19 03:31:31 +09:00
3 changed files with 17 additions and 3 deletions
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6
AK/Userspace.h
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@ -33,12 +33,12 @@ namespace AK {
// HACK: This is just here to make syntax highlighting work in Qt Creator.
// Once it supports C++20 concepts, we can remove this.
#ifdef __clang__
template<typename T>
#else
#if defined(__cpp_concepts) && !defined(__COVERITY__)
template<typename T>
concept PointerTypeName = IsPointer<T>::value;
template<PointerTypeName T>
#else
template<typename T, typename EnableIf<IsPointer<T>::value, int>::Type = 0>
#endif
class Userspace {