[LLVMbugs] [Bug 21961] New: [fuzz] Assertion `(Destructor->isDefaulted() && !Destructor->doesThisDeclarationHaveABody() && !Destructor->isDeleted()) && "DefineImplicitDestructor - call it for implicit default dtor"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21961

            Bug ID: 21961
           Summary: [fuzz] Assertion `(Destructor->isDefaulted() &&
                    !Destructor->doesThisDeclarationHaveABody() &&
                    !Destructor->isDeleted()) && "DefineImplicitDestructor
                    - call it for implicit default dtor"' failed.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sami.liedes at iki.fi
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Fuzzing discovered that the test case below, when given as input to

  clang -fno-crash-diagnostics -std=c++11 -xc++ -c -emit-llvm

causes this assertion failure:

clang-3.6: tools/clang/lib/Sema/SemaDeclCXX.cpp:9226: void
clang::Sema::DefineImplicitDestructor(clang::SourceLocation,
clang::CXXDestructorDecl*): Assertion `(Destructor->isDefaulted() &&
!Destructor->doesThisDeclarationHaveABody() && !Destructor->isDeleted()) &&
"DefineImplicitDestructor - call it for implicit default dtor"' failed.

Test case:

--------------------------------------------------
struct A {
  ~A() = delete;
  ~A() = default;
};
--------------------------------------------------

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