Files
llvm/lib/Demangle
Nico Weber f6b23dfdd4 llvm-undname: Fix stack overflow on almost-valid
If a unsigned with all 4 bytes non-0 was passed to outputHex(), there
were two off-by-ones in it:

- Both MaxPos and Pos left space for the final \0, which left the buffer
  one byte to small. Set MaxPos to 16 instead of 15 to fix.

- The `assert(Pos >= 0);` was after a `Pos--`, move it up one line.

Since valid Unicode codepoints are <= 0x10ffff, this could never really
happen in practice.

Found by oss-fuzz.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358856 91177308-0d34-0410-b5e6-96231b3b80d8
2019-04-21 16:58:25 +00:00
..