make static C and C.UTF-8 locales available outside of newlocale

src/internal/locale_impl.h

@@ -12,6 +12,10 @@ struct __locale_map {
 	const struct __locale_map *next;
 };
 
+extern const struct __locale_map __c_dot_utf8;
+extern const struct __locale_struct __c_locale;
+extern const struct __locale_struct __c_dot_utf8_locale;
+
 const struct __locale_map *__get_locale(int, const char *);
 const char *__mo_lookup(const void *, size_t, const char *);
 const char *__lctrans(const char *, const struct __locale_map *);
@@ -20,6 +24,9 @@ const char *__lctrans_cur(const char *);
 #define LCTRANS(msg, lc, loc) __lctrans(msg, (loc)->cat[(lc)])
 #define LCTRANS_CUR(msg) __lctrans_cur(msg)
 
+#define C_LOCALE ((locale_t)&__c_locale)
+#define UTF8_LOCALE ((locale_t)&__c_dot_utf8_locale)
+
 #define CURRENT_LOCALE (__pthread_self()->locale)
 
 #define CURRENT_UTF8 (!!__pthread_self()->locale->cat[LC_CTYPE])

src/locale/c_locale.c

+#include "locale_impl.h"
+#include <stdint.h>
+
+static const uint32_t empty_mo[] = { 0x950412de, 0, -1, -1, -1 };
+
+const struct __locale_map __c_dot_utf8 = {
+	.map = empty_mo,
+	.map_size = sizeof empty_mo,
+	.name = "C.UTF-8"
+};
+
+const struct __locale_struct __c_locale = { 0 };
+const struct __locale_struct __c_dot_utf8_locale = {
+	.cat[LC_CTYPE] = &__c_dot_utf8
+};

src/locale/locale_map.c

@@ -24,14 +24,6 @@ static const char envvars[][12] = {
 	"LC_MESSAGES",
 };
 
-static const uint32_t empty_mo[] = { 0x950412de, 0, -1, -1, -1 };
-
-const struct __locale_map __c_dot_utf8 = {
-	.map = empty_mo,
-	.map_size = sizeof empty_mo,
-	.name = "C.UTF-8"
-};
-
 const struct __locale_map *__get_locale(int cat, const char *val)
 {
 	static int lock[2];
@@ -107,8 +99,8 @@ const struct __locale_map *__get_locale(int cat, const char *val)
 	 * sake of being able to do message translations at the
 	 * application level. */
 	if (!new && (new = malloc(sizeof *new))) {
-		new->map = empty_mo;
-		new->map_size = sizeof empty_mo;
+		new->map = __c_dot_utf8.map;
+		new->map_size = __c_dot_utf8.map_size;
 		memcpy(new->name, val, n);
 		new->name[n] = 0;
 		new->next = loc_head;

src/locale/newlocale.c

@@ -3,16 +3,9 @@
 #include "locale_impl.h"
 #include "libc.h"
 
-extern const struct __locale_map __c_dot_utf8;
-
-static const struct __locale_struct c_locale = { 0 };
-static const struct __locale_struct c_dot_utf8_locale = {
-	.cat[LC_CTYPE] = &__c_dot_utf8
-};
-
 int __loc_is_allocated(locale_t loc)
 {
-	return loc && loc != &c_locale && loc != &c_dot_utf8_locale;
+	return loc && loc != C_LOCALE && loc != UTF8_LOCALE;
 }
 
 locale_t __newlocale(int mask, const char *name, locale_t loc)
@@ -44,9 +37,9 @@ locale_t __newlocale(int mask, const char *name, locale_t loc)
 	}
 
 	if (!j)
-		return (locale_t)&c_locale;
-	if (j==1 && tmp.cat[LC_CTYPE]==c_dot_utf8_locale.cat[LC_CTYPE])
-		return (locale_t)&c_dot_utf8_locale;
+		return C_LOCALE;
+	if (j==1 && tmp.cat[LC_CTYPE]==&__c_dot_utf8)
+		return UTF8_LOCALE;
 
 	if ((loc = malloc(sizeof *loc))) *loc = tmp;