Jonathan Wakely 356510acd9 PR libstdc++/68353 fix _GLIBCXX_USE_C99_WCHAR test
PR libstdc++/68353
	* include/bits/basic_string.h: Test value of _GLIBCXX_USE_C99_WCHAR
	not whether it is defined.
	* include/ext/vstring.h: Likewise.

From-SVN: r230395
2015-11-15 11:15:08 +00:00
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