-fwarn-missing-fields
-fwarn-deprecations
-fwarn-duplicate-exports
+ -fwarn-hi-shadowing
these are turned off by -Wnot.
'-fwarn-missing-methods',
'-fwarn-missing-fields',
'-fwarn-deprecations',
+ '-fwarn-hi-shadowing',
'-fwarn-duplicate-exports');
@MinusWOpts = (@StandardWarnings,
'-fwarn-unused-binds',