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-rw-r--r--src/locale/newlocale.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/src/locale/newlocale.c b/src/locale/newlocale.c
index 6857460..d20a848 100644
--- a/src/locale/newlocale.c
+++ b/src/locale/newlocale.c
@@ -1,10 +1,22 @@
#include <stdlib.h>
#include <string.h>
+#include <pthread.h>
#include "locale_impl.h"
+static pthread_once_t default_locale_once;
+static struct __locale_struct default_locale, default_ctype_locale;
+
+static void default_locale_init(void)
+{
+ for (int i=0; i<LC_ALL; i++)
+ default_locale.cat[i] = __get_locale(i, "");
+ default_ctype_locale.cat[LC_CTYPE] = default_locale.cat[LC_CTYPE];
+}
+
int __loc_is_allocated(locale_t loc)
{
- return loc && loc != C_LOCALE && loc != UTF8_LOCALE;
+ return loc && loc != C_LOCALE && loc != UTF8_LOCALE
+ && loc != &default_locale && loc != &default_ctype_locale;
}
locale_t __newlocale(int mask, const char *name, locale_t loc)
@@ -30,6 +42,13 @@ locale_t __newlocale(int mask, const char *name, locale_t loc)
if (!memcmp(&tmp, C_LOCALE, sizeof tmp)) return C_LOCALE;
if (!memcmp(&tmp, UTF8_LOCALE, sizeof tmp)) return UTF8_LOCALE;
+ /* And provide builtins for the initial default locale, and a
+ * variant of the C locale honoring the default locale's encoding. */
+ pthread_once(&default_locale_once, default_locale_init);
+ if (!memcmp(&tmp, &default_locale, sizeof tmp)) return &default_locale;
+ if (!memcmp(&tmp, &default_ctype_locale, sizeof tmp))
+ return &default_ctype_locale;
+
/* If no builtin locale matched, attempt to allocate and copy. */
if ((loc = malloc(sizeof *loc))) *loc = tmp;