Add assertion to char32_t that the value is valid, as suggested by Jordy Rose.
Add a test that such characters don't make it through to StringLiteral objects
in error recovery.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147438 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed