fix public clone function to be safe and usable by applications

[musl] / src / internal / locale_impl.h

diff --git a/src/internal/locale_impl.h b/src/internal/locale_impl.h
index 0b5e00c..4431a92 100644 (file)
--- a/src/internal/locale_impl.h
+++ b/src/internal/locale_impl.h
@@ -15,6 +15,8 @@ struct __locale_map {
        const struct __locale_map *next;
 };
 
+extern hidden volatile int __locale_lock[1];
+
 extern hidden const struct __locale_map __c_dot_utf8;
 extern hidden const struct __locale_struct __c_locale;
 extern hidden const struct __locale_struct __c_dot_utf8_locale;
@@ -27,6 +29,8 @@ hidden const char *__lctrans_impl(const char *, const struct __locale_map *);
 hidden int __loc_is_allocated(locale_t);
 hidden char *__gettextdomain(void);
 
+#define LOC_MAP_FAILED ((const struct __locale_map *)-1)
+
 #define LCTRANS(msg, lc, loc) __lctrans(msg, (loc)->cat[(lc)])
 #define LCTRANS_CUR(msg) __lctrans_cur(msg)