* io.c (rb_io_fread): may lose data on nonblocking read.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3604 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -24,6 +24,10 @@ Sat Mar 22 12:44:15 2003  Tanaka Akira  <akr@m17n.org>
         * lib/date/format.rb, lib/uri/common.rb: `[', `]', `-' in chracter
           class in regexp to avoid warning.
 
+Sat Mar 22 07:39:32 2003  Ulf Betlehem  <flu@iki.fi>
+
+	* io.c (rb_io_fread): may lose data on nonblocking read.
+
 Fri Mar 21 23:40:41 2003  Tanaka Akira  <akr@m17n.org>
 
         * regex.c (re_compile_pattern): fix previous change.

io.c

@@ -710,7 +710,7 @@ rb_io_fread(ptr, len, f)
 #if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
 		  case EWOULDBLOCK:
 #endif
-		    if (len - n > 0) {
+                   if (len - n >= 0) {
 			clearerr(f);
 			return len - n;
 		    }

lib/complex.rb

@@ -407,9 +407,7 @@ end
 
 
 class Fixnum
-  if not defined? Rational
   alias power! **
-  end
   
   # Redefined to handle a Complex argument.
   def ** (other)
@@ -430,10 +428,8 @@ class Fixnum
 end
 
 class Bignum
-  if not defined? Rational
   alias power! **
 end
-end
 
 class Float
   alias power! **
@@ -459,7 +455,11 @@ module Math
 	Complex(0,sqrt!(-z))
       end
     else
+      if defined? Rational
 	z**Rational(1,2)
+      else
+	z**0.5
+      end
     end
   end
   

lib/jcode.rb

@@ -59,13 +59,13 @@ class String
   def end_regexp
     case $KCODE[0]
     when ?s, ?S
-      /#{PATTERN_SJIS}$/o
+      /#{PATTERN_SJIS}$/on
     when ?e, ?E
-      /#{PATTERN_EUC}$/o
+      /#{PATTERN_EUC}$/on
     when ?u, ?U
-      /#{PATTERN_UTF8}$/o
+      /#{PATTERN_UTF8}$/on
     else
-      /.$/o
+      /.$/on
     end
   end