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[libc++] __uglify [[clang::noescape]] (#113280)

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Identifiers `clang` and `noescape` are not reserved by the C++ standard,
so perhaps we need to use the equivalent reserved forms.

Also changes the occurrences of that attribute to a macro, following the
convention for `[[_Clang::__lifetimebound__]]`.

Addresses
https://github.com/llvm/llvm-project/pull/91651#discussion_r1807852646.
This commit is contained in:
A. Jiang 2024-10-25 09:04:42 +08:00 committed by GitHub
parent c4248fa3ed
commit 08159e6e11
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GPG Key ID: B5690EEEBB952194
3 changed files with 12 additions and 6 deletions
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6
libcxx/include/__charconv/from_chars_floating_point.h
View File

@ -37,13 +37,13 @@ struct __from_chars_result {
template <class _Fp>
_LIBCPP_EXPORTED_FROM_ABI __from_chars_result<_Fp> __from_chars_floating_point(
[[clang::noescape]] const char* __first, [[clang::noescape]] const char* __last, chars_format __fmt);
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
extern template __from_chars_result<float> __from_chars_floating_point(
[[clang::noescape]] const char* __first, [[clang::noescape]] const char* __last, chars_format __fmt);
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
extern template __from_chars_result<double> __from_chars_floating_point(
[[clang::noescape]] const char* __first, [[clang::noescape]] const char* __last, chars_format __fmt);
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
template <class _Fp>
_LIBCPP_HIDE_FROM_ABI from_chars_result

6
libcxx/include/__config
View File

@ -1163,6 +1163,12 @@ typedef __char32_t char32_t;
# define _LIBCPP_LIFETIMEBOUND
# endif
# if __has_cpp_attribute(_Clang::__noescape__)
# define _LIBCPP_NOESCAPE [[_Clang::__noescape__]]
# else
# define _LIBCPP_NOESCAPE
# endif
# if __has_attribute(__nodebug__)
# define _LIBCPP_NODEBUG __attribute__((__nodebug__))
# else

6
libcxx/src/charconv.cpp
View File

@ -77,13 +77,13 @@ to_chars_result to_chars(char* __first, char* __last, long double __value, chars
template <class _Fp>
__from_chars_result<_Fp> __from_chars_floating_point(
[[clang::noescape]] const char* __first, [[clang::noescape]] const char* __last, chars_format __fmt) {
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt) {
return std::__from_chars_floating_point_impl<_Fp>(__first, __last, __fmt);
}
template __from_chars_result<float> __from_chars_floating_point(
[[clang::noescape]] const char* __first, [[clang::noescape]] const char* __last, chars_format __fmt);
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
template __from_chars_result<double> __from_chars_floating_point(
[[clang::noescape]] const char* __first, [[clang::noescape]] const char* __last, chars_format __fmt);
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
_LIBCPP_END_NAMESPACE_STD