B.2.82 -xcsi

Allows the C compiler to accept source code written in locales that do not conform to the ISO C source character code requirements. These locales include: ja_JP.PCK.

The compiler translation phases required to handle such locales may result in significantly longer compilation times. You should only use this option when you compile source files that contain source characters from one of these locales.

The compiler does not recognize source code written in locales that do not conform to the ISO C source character code requirements unless you specify -xcsi.