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
Summary: 1. llvm-as/llvm-dis tools do not check for input filename length. 2. llvm-dis does not verify the `Streamer` variable against `nullptr` properly, so the `M` variable could be uninitialized (e.g. if the input file does not exist) leading to null dref. Patch by Lenar Safin! Reviewers: samsonov Reviewed By: samsonov Subscribers: samsonov, llvm-commits Differential Revision: http://reviews.llvm.org/D9584 llvm-svn: 237051