From 2df58f190731634be67e90b7c453dee587b4ea27 Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Fri, 5 May 2023 18:19:40 +0200 Subject: [PATCH] Apply libc++ fix for compiling with gcc 13 Merge commit 484e64f7e7b2 from llvm-project (by Roland McGrath): [libc++] Use __is_convertible built-in when available https://github.com/llvm/llvm-project/issues/62396 reports that GCC 13 barfs on parsing because of the declarations of `struct __is_convertible`. In GCC 13, `__is_convertible` is a built-in, but `__is_convertible_to` is not. Clang has both, so using either should be fine. Reviewed By: #libc, philnik Differential Revision: https://reviews.llvm.org/D149313 Reported by: Mark Millard MFC after: 3 days --- .../libcxx/include/__type_traits/is_convertible.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/contrib/llvm-project/libcxx/include/__type_traits/is_convertible.h b/contrib/llvm-project/libcxx/include/__type_traits/is_convertible.h index 7e49cd4e6a31..7ce3c38b76de 100644 --- a/contrib/llvm-project/libcxx/include/__type_traits/is_convertible.h +++ b/contrib/llvm-project/libcxx/include/__type_traits/is_convertible.h @@ -24,11 +24,18 @@ _LIBCPP_BEGIN_NAMESPACE_STD -#if __has_builtin(__is_convertible_to) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) +#if __has_builtin(__is_convertible) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) + +template +struct _LIBCPP_TEMPLATE_VIS is_convertible : public integral_constant {}; + +#elif __has_builtin(__is_convertible_to) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) template struct _LIBCPP_TEMPLATE_VIS is_convertible : public integral_constant {}; +// TODO: Remove this fallback when GCC < 13 support is no longer required. +// GCC 13 has the __is_convertible built-in. #else // __has_builtin(__is_convertible_to) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) namespace __is_convertible_imp