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Fix clang bug with parameter packs and bracket operators #364

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Merged
merged 1 commit into from
Nov 8, 2024
Merged

Fix clang bug with parameter packs and bracket operators #364

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8 changes: 7 additions & 1 deletion include/experimental/__p0009_bits/config.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -240,7 +240,13 @@ static_assert(_MDSPAN_CPLUSPLUS >= MDSPAN_CXX_STD_14, "mdspan requires C++14 or

#ifndef MDSPAN_USE_BRACKET_OPERATOR
# if defined(__cpp_multidimensional_subscript)
# define MDSPAN_USE_BRACKET_OPERATOR 1
// The following if/else is necessary to workaround a clang issue
// relative to using a parameter pack inside a bracket operator in C++2b/C++23 mode
# if defined(_MDSPAN_COMPILER_CLANG) && ((__clang_major__ == 15) || (__clang_major__ == 16))
# define MDSPAN_USE_BRACKET_OPERATOR 0
# else
# define MDSPAN_USE_BRACKET_OPERATOR 1
# endif
# else
# define MDSPAN_USE_BRACKET_OPERATOR 0
# endif
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