[llvm-bugs] [Bug 28673] New: [ThinLTO] Assertion `!(Pair.first != Ty && Pair.second == Ty) && "mapping to a source type"' failed

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28673

            Bug ID: 28673
           Summary: [ThinLTO] Assertion `!(Pair.first != Ty && Pair.second
                    == Ty) && "mapping to a source type"' failed
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: twoh at fb.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

ld: /home/twoh/llvms/latest-dev/llvm/lib/Linker/IRMover.cpp:319: llvm::Type*
{anonymous}::TypeMapTy::get(llvm::Type*, llvm::SmallPtrSet<llvm::StructType*,
8u>&): Assertion `!(Pair.first != Ty && Pair.second == Ty) && "mapping to a
source type"' failed.
clang-3.9: error: unable to execute command: Aborted (core dumped)
clang-3.9: error: linker command failed due to signal (use -v to see
invocation)

Encountered the assertion failure while running ThinLTO.

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