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-rw-r--r--libstdc++-v3/include/c_compatibility/stdlib.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/libstdc++-v3/include/c_compatibility/stdlib.h b/libstdc++-v3/include/c_compatibility/stdlib.h
index bd72580cffe..31e7e5ff1a6 100644
--- a/libstdc++-v3/include/c_compatibility/stdlib.h
+++ b/libstdc++-v3/include/c_compatibility/stdlib.h
@@ -62,9 +62,11 @@ using std::getenv;
using std::labs;
using std::ldiv;
using std::malloc;
+#ifdef _GLIBCXX_HAVE_MBSTATE_T
using std::mblen;
using std::mbstowcs;
using std::mbtowc;
+#endif // _GLIBCXX_HAVE_MBSTATE_T
using std::qsort;
using std::rand;
using std::realloc;
@@ -73,8 +75,10 @@ using std::strtod;
using std::strtol;
using std::strtoul;
using std::system;
+#ifdef _GLIBCXX_USE_WCHAR_T
using std::wcstombs;
using std::wctomb;
+#endif // _GLIBCXX_USE_WCHAR_T
#endif
#endif