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We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)
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Doesn't use them in libc headers so that those don't have to pull in
AK/Platform.h.
AK_COMPILER_GCC is set _only_ for gcc, not for clang too. (__GNUC__ is
defined in clang builds as well.) Using AK_COMPILER_GCC simplifies
things some.
AK_COMPILER_CLANG isn't as much of a win, other than that it's
consistent with AK_COMPILER_GCC.
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This mechanism was unsafe to use in any multithreaded context, since
the hook function was invoked on a raw pointer *after* decrementing
the local ref count.
Since we don't use it for anything anymore, let's just get rid of it.
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This commit converts naked `new`s to `AK::try_make` and `AK::try_create`
wherever possible. If the called constructor is private, this can not be
done, so we instead now use the standard-defined and compiler-agnostic
`new (nothrow)`.
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We can't unref an object to destruction while there's still a live
RefPtr to the object, otherwise the RefPtr destructor will try to
destroy it again, accessing the refcount of a destroyed object (before
realizing that oops! the object is already dead)
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Unfortunately adopt_ref requires a reference, which obviously does not
work well with when attempting to harden against allocation failure.
The adopt_ref_if_nonnull() variant will allow you to avoid using bare
pointers, while still allowing you to handle allocation failure.
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