ilinpv added a comment. I've managed to reproduce "MemorySanitizer: use-of-uninitialized-value" error locally, thank you @hctim for help! If I understand it right, it seems **MSan didn't handle correctly SmallVector** - a variable-sized array with some number of elements in-place and heap allocation for additional elements if needed:
clang/lib/Sema/SemaDeclAttr.cpp:3615 SmallVector<SmallString<64>, 2> StringsBuffer; There were 2 elements in-placed for StringsBuffer and tests which require 3 failed with MSan use-of-uninitialized-value error. With number of StringsBuffer in-placed elements set to 3 SmallVector<SmallString<64>, 3> StringsBuffer; all use-of-uninitialized-value errors have gone. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D127812/new/ https://reviews.llvm.org/D127812 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
