.clang-tidy

# Older clang-tidy gives a warning for an uninitialized va_args,
# even on the test case that they assert should not produce that warning:
# https://github.com/llvm-mirror/clang/blob/59207d134acb8a1c6cb9974c32c1c04bd31f8f7b/test/Analysis/valist-uninitialized.c#L30
Checks: "-clang-analyzer-valist.Uninitialized"
WarningsAsErrors: "*"