RBIMPL_HAS_CPP_ATTRIBUTE: handle SunPro
Oracle Developer Studio's C++ preprocessor started to understand __has_cpp_attribute since version 12.5, and is broken. After looking around for a while I found Boost and ICU also had this issue before. Let me add workaround for it.
Added by shyouhei (Shyouhei Urabe) almost 5 years ago
RBIMPL_HAS_CPP_ATTRIBUTE: handle SunPro
Oracle Developer Studio's C++ preprocessor started to understand
__has_cpp_attribute since version 12.5, and is broken. After looking
around for a while I found Boost and ICU also had this issue before.
Let me add workaround for it.