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Fix typeinfo for undefined sanitizer #121228

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Fix typeinfo for undefined sanitizer #121228

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3d8fb18
Fix typeinfo for undefined sanitizer
MBkkt Dec 27, 2024
7924abb
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MBkkt Dec 28, 2024
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4 changes: 3 additions & 1 deletion libcxx/include/typeinfo
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Original file line number Diff line number Diff line change
Expand Up @@ -315,7 +315,9 @@ public:

_LIBCPP_HIDE_FROM_ABI size_t hash_code() const _NOEXCEPT { return __impl::__hash(__type_name); }

_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const type_info& __arg) const _NOEXCEPT {
// We need to inline this code because otherwise we will get a stack overflow with undefined sanitizer.
_LIBCPP_HIDE_FROM_ABI _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR_SINCE_CXX23 bool
operator==(const type_info& __arg) const _NOEXCEPT {
// When evaluated in a constant expression, both type infos simply can't come
// from different translation units, so it is sufficient to compare their addresses.
if (__libcpp_is_constant_evaluated()) {
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