MemorySanitizer: Fast detector of uninitialized memory use in C++

  title={MemorySanitizer: Fast detector of uninitialized memory use in C++},
  author={Evgeniy Stepanov and Konstantin Serebryany},
  journal={2015 IEEE/ACM International Symposium on Code Generation and Optimization (CGO)},
This paper presents MemorySanitizer, a dynamic tool that detects uses of uninitialized memory in C and C++. The tool is based on compile time instrumentation and relies on bit-precise shadow memory at run-time. Shadow propagation technique is used to avoid false positive reports on copying of uninitialized memory. MemorySanitizer finds bugs at a modest cost of 2.5x in execution time and 2x in memory usage; the tool has an optional origin tracking mode that provides better reports with moderate… CONTINUE READING
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