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6068c48498
It appears to have caught a use-after-free introduced as by r159567 and/or friends which call 'addPass' from many more places. The bug in 'addPass' doesn't appear to be new, and was spotted by inspection when ASan shown a bright light of a stacktrace at these functions. Hopefully this will fix the ASan failure -- I have no test case other than running an ASan-built clang over the test suite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159614 91177308-0d34-0410-b5e6-96231b3b80d8