natSystem.cc (getpwuid_adaptor): New overloaded function that detects the signature of getpwuid_r.

* java/lang/natSystem.cc (getpwuid_adaptor): New overloaded
function that detects the signature of getpwuid_r.
(init_properties): Use it.
* java/util/natDate.cc (ctime_adaptor): Likewise for ctime_r.
(toString): Use it.

From-SVN: r28790

libjava/java/lang/natSystem.cc

@@ -231,6 +231,34 @@ java::lang::System::identityHashCode (jobject obj)
 #endif
 static char *default_file_encoding = DEFAULT_FILE_ENCODING;
 
+#if HAVE_GETPWUID_R
+/* Use overload resolution to find out the signature of getpwuid_r.  */
+
+  /* This is Posix getpwuid_r.  */
+template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
+static inline int
+getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
+				   T_buf *buf_r, T_len len_r,
+				   T_passwd **pwd_entry_ptr),
+		 uid_t user_id, struct passwd *pwd_r,
+		 char *buf_r, size_t len_r, struct passwd **pwd_entry)
+{
+  return getpwuid_r(user_id, pwd_r, buf_r, len_r, pwd_entry);
+}
+
+/* This is used on IRIX 5.2.  */
+template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
+static inline int
+getpwuid_adaptor(T_passwd * (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
+					  T_buf *buf_r, T_len len_r),
+		 uid_t user_id, struct passwd *pwd_r,
+		 char *buf_r, size_t len_r, struct passwd **pwd_entry)
+{
+  *pwd_entry = getpwuid_r(user_id, pwd_r, buf_r, len_r);
+  return (*pwd_entry == NULL) ? errno : 0;
+}
+#endif
+
 void
 java::lang::System::init_properties (void)
 {
@@ -293,7 +321,8 @@ java::lang::System::init_properties (void)
 
   while (buf_r != NULL)
     {
-      int r = getpwuid_r (user_id, &pwd_r, buf_r, len_r, &pwd_entry);
+      int r = getpwuid_adaptor
+	(getpwuid_r, user_id, &pwd_r, buf_r, len_r, &pwd_entry);
       if (r == 0)
 	break;
       else if (r != ERANGE)

libjava/java/util/natDate.cc

@@ -28,13 +28,35 @@ details.  */
 #include <sys/time.h>
 #endif
 
+#if HAVE_CTIME_R
+/* Use overload resolution to find out the signature of ctime_r.  */
+
+  /* This is Posix ctime_r().  */
+template <typename T_clock, typename T_buf, size_t buflen>
+static inline char *
+ctime_adaptor (char* (*ctime_r)(T_clock *clock, T_buf *buf),
+	       time_t *clock, char (&buf)[buflen])
+{
+  return ctime_r(clock, buf);
+}
+
+/* This is an old-style ctime_r, used on IRIX 5.2.  */
+template <typename T_clock, typename T_buf, typename T_buflen, size_t buflen>
+static inline char *
+ctime_adaptor (char* (*ctime_r)(T_clock *clock, T_buf *buf, T_buflen len),
+	       time_t *clock, char (&buf)[buflen])
+{
+  return ctime_r(clock, buf, buflen);
+}
+#endif
+
 jstring
 java::util::Date::toString()
 {
 #ifdef HAVE_CTIME_R
   time_t t = millis / 1000;
   char buf[30];
-  return JvNewStringLatin1 (ctime_r (&t, buf));
+  return JvNewStringLatin1 (ctime_adaptor (ctime_r, &t, buf));
 #elif defined (HAVE_CTIME)
   // FIXME: this isn't thread-safe.
   time_t t = millis / 1000;