[all-commits] [llvm/llvm-project] 0ec5f5: Harden IR and bitcode parsers against infinite siz...

[Eli Friedman via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 0ec5f501964010d4a186a51438338656eebe7912
      https://github.com/llvm/llvm-project/commit/0ec5f501964010d4a186a51438338656eebe7912
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2020-05-16 (Sat, 16 May 2020)

  Changed paths:
    M llvm/lib/AsmParser/LLParser.cpp
    M llvm/lib/Bitcode/Reader/BitcodeReader.cpp
    A llvm/test/Verifier/recursive-type-load.ll
    A llvm/test/Verifier/recursive-type-store.ll

  Log Message:
  -----------
  Harden IR and bitcode parsers against infinite size types.

If isSized is passed a SmallPtrSet, it uses that set to catch infinitely
recursive types (for example, a struct that has itself as a member).
Otherwise, it just crashes on such types.