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[ASan][libc++] Update string ASan annotations to zero-overhead #76165

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[ASan][libc++] Update string ASan annotations to zero-overhead #76165

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df31c7d
[ASan][libc++] Update string ASan annotations to Zero-overhead
AdvenamTacet Dec 21, 2023
2060199
Fixes based on the code review
AdvenamTacet Dec 21, 2023
739aa3e
Conditionalize ASan variables
AdvenamTacet Dec 21, 2023
bd888d9
Changes based on @ldionne code review
AdvenamTacet Dec 21, 2023
b14b804
Remove additional newline
AdvenamTacet Dec 21, 2023
71ec899
if constexpr since C++17
AdvenamTacet Dec 21, 2023
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10 changes: 10 additions & 0 deletions libcxx/include/__config
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Original file line number Diff line number Diff line change
Expand Up @@ -1490,6 +1490,16 @@ __sanitizer_verify_double_ended_contiguous_container(const void*, const void*, c
# define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
# endif

// ASan related macros
// _LIBCPP_IF_ASAN is used to removed ASan related code, whenever compiled without ASan.
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#ifndef _LIBCPP_IF_ASAN
# ifndef _LIBCPP_HAS_NO_ASAN
# define _LIBCPP_IF_ASAN() if _LIBCPP_CONSTEXPR (true)
# else
# define _LIBCPP_IF_ASAN() if _LIBCPP_CONSTEXPR (false)
# endif
#endif
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#endif // __cplusplus

#endif // _LIBCPP___CONFIG