Add -Wduplicate-enum warning. Clang will emit this warning when an implicitly
initiated enum constant has the same value as another enum constant.
For instance:
enum test { A, B, C = -1, D, E = 1 };
Clang will warn that:
A and D both have value 0
B and E both have value 1
A few exceptions are made to keep the noise down. Enum constants which are
initialized to another enum constant, or an enum constant plus or minus 1 will
not trigger this warning. Also, anonymous enums are not checked.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162938 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed
