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Summary: UBSAN complains that this is undefined behavior. We can assume that empty substring (N==1) always satisfy conditions. So std::memcmp will be called only only for N > 1 and Str.size() > 0. Reviewers: ruiu, zturner Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D26646 llvm-svn: 286910
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