rework langinfo code for ABI compat and for use by time code

src/locale/langinfo.c

@@ -25,7 +25,7 @@ static const char c_time[] =
 static const char c_messages[] = "^[yY]\0" "^[nN]";
 static const char c_numeric[] = ".\0" "";
 
-char *__langinfo(nl_item item)
+char *__nl_langinfo_l(nl_item item, locale_t loc)
 {
 	int cat = item >> 16;
 	int idx = item & 65535;
@@ -58,4 +58,10 @@ char *__langinfo(nl_item item)
 	return (char *)str;
 }
 
-weak_alias(__langinfo, nl_langinfo);
+char *__nl_langinfo(nl_item item)
+{
+	return __nl_langinfo_l(item, LC_GLOBAL_LOCALE);
+}
+
+weak_alias(__nl_langinfo, nl_langinfo);
+weak_alias(__nl_langinfo_l, nl_langinfo_l);

src/locale/nl_langinfo_l.c

@@ -1,7 +0,0 @@
-#include <locale.h>
-#include <langinfo.h>
-
-char *nl_langinfo_l(nl_item item, locale_t l)
-{
-	return nl_langinfo(item);
-}

src/time/__asctime.c

@@ -3,14 +3,15 @@
 #include <langinfo.h>
 #include "atomic.h"
 
-const char *__langinfo(nl_item);
+const char *__nl_langinfo(nl_item);
 
 char *__asctime(const struct tm *restrict tm, char *restrict buf)
 {
-	/* FIXME: change __langinfo to __C_langinfo once we have locales */
+	/* FIXME: change __nl_langinfo to __nl_langinfo_l with explicit C
+	 * locale once we have locales */
 	if (snprintf(buf, 26, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
-		__langinfo(ABDAY_1+tm->tm_wday),
-		__langinfo(ABMON_1+tm->tm_mon),
+		__nl_langinfo(ABDAY_1+tm->tm_wday),
+		__nl_langinfo(ABMON_1+tm->tm_mon),
 		tm->tm_mday, tm->tm_hour,
 		tm->tm_min, tm->tm_sec,
 		1900 + tm->tm_year) >= 26)

src/time/strftime.c

@@ -8,7 +8,7 @@
 
 // FIXME: integer overflows
 
-const char *__langinfo(nl_item);
+const char *__nl_langinfo_l(nl_item, locale_t);
 
 static int is_leap(int y)
 {
@@ -200,12 +200,12 @@ number:
 		l += snprintf(s+l, n-l, fmt, val);
 		continue;
 nl_strcat:
-		l += snprintf(s+l, n-l, "%s", __langinfo(item));
+		l += snprintf(s+l, n-l, "%s", __nl_langinfo_l(item, loc));
 		continue;
 nl_strftime:
-		fmt = __langinfo(item);
+		fmt = __nl_langinfo_l(item, loc);
 recu_strftime:
-		l += strftime(s+l, n-l, fmt, tm);
+		l += __strftime_l(s+l, n-l, fmt, tm, loc);
 	}
 	if (l >= n) return 0;
 	s[l] = 0;