https://bugs.llvm.org/show_bug.cgi?id=35543

            Bug ID: 35543
           Summary: Assertion `Ty && "Trying to add a type that doesn't
                    exist?"' failed on Windows self host
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedb...@nondot.org
          Reporter: russell_gal...@sn.scee.net
                CC: llvm-bugs@lists.llvm.org

At r319883. Found building a Windows self host compiler with debug. Seen on
DeltaAlgorithm.cpp and other files.

Example reduced from DeltaAlgorithm.cpp

$ cat test.cpp
class A {
  typedef void _Nodeptr;
};
class B {
  A FailedTestsCache;
  bool m_fn1();
};
bool B::m_fn1() {}

$ clang++ -cc1 -emit-obj -gcodeview -debug-info-kind=limited -dwarf-version=4
-x c++ test.cpp
test.cpp:8:18: warning: control reaches end of non-void function
bool B::m_fn1() {}
                 ^
clang++: /home/gbgallor/git/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp:764: void
llvm::DwarfUnit::addType(llvm::DIE&, const llvm::DIType*,
llvm::dwarf::Attribute): Assertion `Ty && "Trying to add a type that doesn't
exist?"' failed.

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