From: "U.Nakamura" <usa@...>
Date: 2001-12-21T21:22:31+09:00
Subject: [ruby-dev:15526] use of uninitialized value on time.c

こんにちは、なかむら(う)です。

time.cの今日の変更(1.49→1.50)ですが、time_plus()とtime_minus()
の
    if (f != (double)sec || d >= 1.0 || d <= -1.0) {
ですが、この時点ではsecにはまだ何も代入されていないです。
察するに、下記のパッチが意図されたものではないかと思うのです
が、いかがなもんでしょう?

Index: time.c
===================================================================
RCS file: /src/ruby/time.c,v
retrieving revision 1.50
diff -u -2 -p -r1.50 time.c
--- time.c	2001/12/21 09:23:21	1.50
+++ time.c	2001/12/21 12:19:59
@@ -953,4 +953,6 @@ time_plus(time1, time2)
     v = NUM2DBL(time2);
     d = modf(v, &f);
+    usec = tobj->tv.tv_usec + (time_t)d*1e6;
+    sec = tobj->tv.tv_sec + (time_t)f;
     if (f != (double)sec || d >= 1.0 || d <= -1.0) {
 	rb_raise(rb_eRangeError, "time + %f out of Time range", v);
@@ -960,9 +962,5 @@ time_plus(time1, time2)
 	rb_raise(rb_eArgError, "time must be positive");
     }
-#endif
-    usec = tobj->tv.tv_usec + (time_t)d*1e6;
-    sec = tobj->tv.tv_sec + (time_t)f;
-
-#ifdef NEGATIVE_TIME_T
+#else
     if ((tobj->tv.tv_sec >= 0 && f >= 0 && sec < 0) ||
 	(tobj->tv.tv_sec <= 0 && f <= 0 && sec > 0)) {
@@ -999,4 +997,6 @@ time_minus(time1, time2)
     v = NUM2DBL(time2);
     d = modf(v, &f);
+    usec = tobj->tv.tv_usec - (time_t)(d*1e6);
+    sec = tobj->tv.tv_sec - (time_t)f;
     if (f != (double)sec || d >= 1.0 || d <= -1.0) {
 	rb_raise(rb_eRangeError, "time - %f out of Time range", v);
@@ -1006,8 +1006,5 @@ time_minus(time1, time2)
 	rb_raise(rb_eArgError, "time must be positive");
     }
-#endif
-    usec = tobj->tv.tv_usec - (time_t)(d*1e6);
-    sec = tobj->tv.tv_sec - (time_t)f;
-#ifdef NEGATIVE_TIME_T
+#else
     if ((tobj->tv.tv_sec <= 0 && f >= 0 && sec > 0) ||
 	(tobj->tv.tv_sec >= 0 && f <= 0 && sec < 0)) {



それでは。
--
U.Nakamura <usa@osb.att.ne.jp>