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JINMEI Tatuya authored
-Wextra as follows: "[class name] has a field [member name] whose type uses the anonymous namespace", even if the anonymous namespqce in question is closed in the single translation unit: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29365 AFAICS, the intent was to warn it if the anonymous namespace is used in a header file (which can easily violate the One Definition Rule as discussed in the bugzilla), but gcc seemingly did too much to prevent that. Unfortunately this bug prohibits us from specifying -Werror, so we selectively disable this flag by identifying g++ used for build has this bug. git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1371 e5f2f494-b856-4b98-b285-d166d9295462
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