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Todd Lipcon updated KUDU-2378: ------------------------------ Fix Version/s: 1.8.0 > Crash due to unaligned loads when building with clang 6.0 > --------------------------------------------------------- > > Key: KUDU-2378 > URL: https://issues.apache.org/jira/browse/KUDU-2378 > Project: Kudu > Issue Type: Improvement > Affects Versions: 1.7.0 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Priority: Major > Fix For: 1.8.0 > > > When I built the whole tree with clang 6.0, all_types-itest crashed due to an > illegal instruction. Looking at assembly, it appeared to be that clang had > generated a 'movaps' (aligned load) instruction for a > *reinterpret_cast<int128_t>() call loading into an xmm register. We aren't > careful with alignment about loading other integer types because unaligned > loads of int64s don't have a high penalty, but unaligned load of int128 > causes a crash. > This is likely to crash on other compilers too -- surprised we haven't seen > it yet. -- This message was sent by Atlassian JIRA (v7.6.3#76005)