use idiomatic weak alias approach for defining asctime_r

get rid of a gratuitous translation unit and call frame between
asctime_r and the actual implementation of the function. this is the
way gmtime_r and localtime_r are already done.

diff --git a/src/time/__asctime.c b/src/time/__asctime.c
deleted file mode 100644 (file)
index f114dfe..0000000
--- a/src/time/__asctime.c
+++ /dev/null
@@ -1,28 +0,0 @@
-#include <time.h>
-#include <stdio.h>
-#include <langinfo.h>
-#include "locale_impl.h"
-#include "atomic.h"
-
-const char *__nl_langinfo_l(nl_item, locale_t);
-
-char *__asctime(const struct tm *restrict tm, char *restrict buf)
-{
-       if (snprintf(buf, 26, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
-               __nl_langinfo_l(ABDAY_1+tm->tm_wday, C_LOCALE),
-               __nl_langinfo_l(ABMON_1+tm->tm_mon, C_LOCALE),
-               tm->tm_mday, tm->tm_hour,
-               tm->tm_min, tm->tm_sec,
-               1900 + tm->tm_year) >= 26)
-       {
-               /* ISO C requires us to use the above format string,
-                * even if it will not fit in the buffer. Thus asctime_r
-                * is _supposed_ to crash if the fields in tm are too large.
-                * We follow this behavior and crash "gracefully" to warn
-                * application developers that they may not be so lucky
-                * on other implementations (e.g. stack smashing..).
-                */
-               a_crash();
-       }
-       return buf;
-}

diff --git a/src/time/asctime.c b/src/time/asctime.c
index 3102eb8..57d15fe 100644 (file)
--- a/src/time/asctime.c
+++ b/src/time/asctime.c
@@ -1,9 +1,9 @@
 #include <time.h>
 
-char *__asctime(const struct tm *, char *);
+char *__asctime_r(const struct tm *, char *);
 
 char *asctime(const struct tm *tm)
 {
        static char buf[26];
-       return __asctime(tm, buf);
+       return __asctime_r(tm, buf);
 }

diff --git a/src/time/asctime_r.c b/src/time/asctime_r.c
index 7dfbb12..1278311 100644 (file)
--- a/src/time/asctime_r.c
+++ b/src/time/asctime_r.c
@@ -1,8 +1,31 @@
 #include <time.h>
+#include <stdio.h>
+#include <langinfo.h>
+#include "locale_impl.h"
+#include "atomic.h"
+#include "libc.h"
 
-char *__asctime(const struct tm *restrict, char *restrict);
+const char *__nl_langinfo_l(nl_item, locale_t);
 
-char *asctime_r(const struct tm *restrict tm, char *restrict buf)
+char *__asctime_r(const struct tm *restrict tm, char *restrict buf)
 {
-       return __asctime(tm, buf);
+       if (snprintf(buf, 26, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
+               __nl_langinfo_l(ABDAY_1+tm->tm_wday, C_LOCALE),
+               __nl_langinfo_l(ABMON_1+tm->tm_mon, C_LOCALE),
+               tm->tm_mday, tm->tm_hour,
+               tm->tm_min, tm->tm_sec,
+               1900 + tm->tm_year) >= 26)
+       {
+               /* ISO C requires us to use the above format string,
+                * even if it will not fit in the buffer. Thus asctime_r
+                * is _supposed_ to crash if the fields in tm are too large.
+                * We follow this behavior and crash "gracefully" to warn
+                * application developers that they may not be so lucky
+                * on other implementations (e.g. stack smashing..).
+                */
+               a_crash();
+       }
+       return buf;
 }
+
+weak_alias(__asctime_r, asctime_r);