[llvm-bugs] [Bug 37957] New: Assertion failure in clang::Expr::ClassifyImpl(clang::ASTContext &, clang::SourceLocation *) const: getValueKind() == VK_XValue

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=37957

            Bug ID: 37957
           Summary: Assertion failure in
                    clang::Expr::ClassifyImpl(clang::ASTContext &,
                    clang::SourceLocation *) const: getValueKind() ==
                    VK_XValue
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: alexfh at google.com
                CC: llvm-bugs at lists.llvm.org

$ cat test-clang__Expr__ClassifyImpl.cc
typedef long a;
class b {
 public:
  operator a();
};
struct c;
class C {
 public:
  c operator[](int);
};
struct c {
  b d[];
};
C e;
void f() {
  b g;
  0 > e[0].d[g];
}
$ clang-check test-clang__Expr__ClassifyImpl.cc -- -std=c++11
assertion failed at llvm/tools/clang/lib/AST/ExprClassification.cpp:58 in Cl
clang::Expr::ClassifyImpl(clang::ASTContext &, clang::SourceLocation *) const:
getValueKind() == VK_XValue
    @     0x556be2ad5026  __assert_fail
    @     0x556be18551bc  clang::Expr::ClassifyImpl()
    @     0x556be0f09a0f  clang::Sema::AddConversionCandidate()
    @     0x556be0efc3e4  IsUserDefinedConversion()
    @     0x556be0f25316  TryUserDefinedConversion()
    @     0x556be0ef5f9e  TryImplicitConversion()
    @     0x556be0f05801  TryCopyInitialization()
    @     0x556be0f0b21f  clang::Sema::AddBuiltinCandidate()
    @     0x556be0f0fbb3  (anonymous
namespace)::BuiltinOperatorOverloadBuilder::addGenericBinaryArithmeticOverloads()
    @     0x556be0f0ebb5  clang::Sema::AddBuiltinOperatorCandidates()
    @     0x556be0f1d5ee  clang::Sema::CreateOverloadedBinOp()
    @     0x556be10d29bd  BuildOverloadedBinOp()
    @     0x556be109b889  clang::Sema::ActOnBinOp()
    @     0x556be0cd85a4  clang::Parser::ParseRHSOfBinaryExpression()
    @     0x556be0cd75bc  clang::Parser::ParseAssignmentExpression()
    @     0x556be0cd749e  clang::Parser::ParseExpression()
    @     0x556be0c94de7  clang::Parser::ParseExprStatement()
    @     0x556be0c93dec 
clang::Parser::ParseStatementOrDeclarationAfterAttributes()
    @     0x556be0c9397e  clang::Parser::ParseStatementOrDeclaration()
    @     0x556be0c9adb5  clang::Parser::ParseCompoundStatementBody()
    @     0x556be0c9b69a  clang::Parser::ParseFunctionStatementBody()
    @     0x556be0c7f4e0  clang::Parser::ParseFunctionDefinition()
    @     0x556be0d063bc  clang::Parser::ParseDeclGroup()
    @     0x556be0c7e4bf  clang::Parser::ParseDeclOrFunctionDefInternal()
    @     0x556be0c7dd7c  clang::Parser::ParseDeclarationOrFunctionDefinition()
    @     0x556be0c7cabc  clang::Parser::ParseExternalDeclaration()
    @     0x556be0c7bebb  clang::Parser::ParseTopLevelDecl()
    @     0x556be0c77195  clang::ParseAST()
    @     0x556be0ac6883  clang::FrontendAction::Execute()

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