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release/19.x: [Clang] Fix crash due to invalid source location in __is_trivially_equality_comparable (#107815) #108147

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Sep 16, 2024
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release/19.x: [Clang] Fix crash due to invalid source location in __is_trivially_equality_comparable (#107815) #108147

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3 changes: 2 additions & 1 deletion clang/lib/Sema/SemaExprCXX.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5140,7 +5140,8 @@ static bool HasNonDeletedDefaultedEqualityComparison(Sema &S,

// const ClassT& obj;
OpaqueValueExpr Operand(
{}, Decl->getTypeForDecl()->getCanonicalTypeUnqualified().withConst(),
KeyLoc,
Decl->getTypeForDecl()->getCanonicalTypeUnqualified().withConst(),
ExprValueKind::VK_LValue);
UnresolvedSet<16> Functions;
// obj == obj;
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18 changes: 18 additions & 0 deletions clang/test/SemaCXX/type-traits.cpp
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Expand Up @@ -3958,6 +3958,24 @@ class Template {};
// Make sure we don't crash when instantiating a type
static_assert(!__is_trivially_equality_comparable(Template<Template<int>>));


struct S operator==(S, S);

template <class> struct basic_string_view {};

struct basic_string {
operator basic_string_view<int>() const;
};

template <class T>
const bool is_trivially_equality_comparable = __is_trivially_equality_comparable(T);

template <int = is_trivially_equality_comparable<basic_string> >
void find();

void func() { find(); }


namespace hidden_friend {

struct TriviallyEqualityComparable {
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