Preserve information about dots in numbers across parser rewriting.

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index b9251e9b09afc1461f58a244fad9d278e91e34d3..0769ddc9c9dfb50d388512de6314ad6c4fb17e5b 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -1151,12 +1151,23 @@ static void CheckParsesToNumber(const char* source, bool with_dot) {
 
 
 TEST(ParseNumbers) {
+  CheckParsesToNumber("1.", true);
   CheckParsesToNumber("1.34", true);
   CheckParsesToNumber("134", false);
   CheckParsesToNumber("134e44", false);
   CheckParsesToNumber("134.e44", true);
   CheckParsesToNumber("134.44e44", true);
   CheckParsesToNumber(".44", true);
+
+  CheckParsesToNumber("-1.", true);
+  CheckParsesToNumber("-1.0", true);
+  CheckParsesToNumber("-1.34", true);
+  CheckParsesToNumber("-134", false);
+  CheckParsesToNumber("-134e44", false);
+  CheckParsesToNumber("-134.e44", true);
+  CheckParsesToNumber("-134.44e44", true);
+  CheckParsesToNumber("-.44", true);
+
   CheckParsesToNumber("+x", true);
 }