Add bignum fall-back when the fast dtoa doesn't succeed. This removes Gay's d...

src/dtoa.h

Index: src/dtoa.h
===================================================================
--- src/dtoa.h	(revision 5786)
+++ src/dtoa.h	(working copy)
@@ -72,8 +72,10 @@
 //   which case the caller has to fill the missing digits with '0's.
 //   Halfway cases are again rounded away from 0.
 // 'DoubleToAscii' expects the given buffer to be big enough to hold all digits
-// and a terminating null-character.
-bool DoubleToAscii(double v, DtoaMode mode, int requested_digits,
+// and a terminating null-character. In SHORTEST-mode it expects a buffer of
+// at least kBase10MaximalLength + 1 and otherwise the requested_digits

[William Hesse, 2010/11/15 15:48:30]

+ 1.  Otherwise, the size of the output is limited to requested_digits digits
plus the null terminator.

[Florian Loitsch, 2010/11/16 14:32:06]

Done.

+// parameter (+ 1) limits the size of the output.
+void DoubleToAscii(double v, DtoaMode mode, int requested_digits,
                    Vector<char> buffer, int* sign, int* length, int* point);
 
 } }  // namespace v8::internal