Import Cobalt 24.master.0.1033952
diff --git a/third_party/llvm-project/libcxx/include/__locale b/third_party/llvm-project/libcxx/include/__locale
index e0ffa0c..b461831 100644
--- a/third_party/llvm-project/libcxx/include/__locale
+++ b/third_party/llvm-project/libcxx/include/__locale
@@ -14,6 +14,7 @@
#include <__config>
#include <cctype>
#include <cstdint>
+#include <cstdlib>
#include <locale.h>
#include <mutex>
#include <string>
@@ -927,6 +928,11 @@
}
template <class _CharT>
+_LIBCPP_HIDE_FROM_ABI bool isblank(_CharT __c, const locale& __loc) {
+ return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::blank, __c);
+}
+
+template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
_CharT
toupper(_CharT __c, const locale& __loc)
