Update tests, fix printing of doubles.

runtime/vm/object.cc

Index: runtime/vm/object.cc
===================================================================
--- runtime/vm/object.cc	(revision 1359)
+++ runtime/vm/object.cc	(working copy)
@@ -5262,6 +5262,15 @@
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len));
   OS::SNPrint(chars, len, kFormat, value());
+  // Eliminate trailing 0s, but leave one digit after '.'.

[hausner, 2011/11/09 19:32:01]

Doesn't the %f format specifier suppress trailing 0 digits already?

Also, your solution doesn't work for floating point numbers with an exponent.

[srdjan, 2011/11/09 21:48:55]

Unfortunately it doesn't.
%f does not print an exponent at all.

This is a stop-gap solution until we have added floitsch's FP printing code.

+  // 'chars' is null terminated.
+  for (intptr_t i = len - 2; i >= 1; i--) {
+    if ((chars[i] == '0') && (chars[i - 1] != '.')) {
+      chars[i] = '\0';
+    } else {
+      break;
+    }
+  }
   return chars;
 }