shafik added a comment.
Herald added a subscriber: ormris.

It looks like this commit introduced undefined behavior via a misaligned load 
see this log from lldb sanitized bot on green dragon

http://lab.llvm.org:8080/green/view/LLDB/job/lldb-sanitized/2050/testReport/junit/lldb-Suite/functionalities_postmortem_minidump-new/TestMiniDumpUUID_py/

Summary:

/Users/buildslave/jenkins/workspace/lldb-sanitized/llvm/lib/Support/ConvertUTF.cpp:259:14:
 runtime error: load of misaligned address 0x61700018f671 for type 'const 
llvm::UTF16' (aka 'const unsigned short'), which requires 2 byte alignment
0x61700018f671: note: pointer points here

  0c 00 00  00 2f 00 74 00 6d 00 70  00 2f 00 62 00 52 53 44  53 0a 14 1e 28 32 
3c 46  50 5a 64 6e 78
           ^ 

SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior 
/Users/buildslave/jenkins/workspace/lldb-sanitized/llvm/lib/Support/ConvertUTF.cpp:259:14
 in


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59433/new/

https://reviews.llvm.org/D59433



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