ES6: Add support for explicit octal and binary integer literals

src/conversions-inl.h

Index: src/conversions-inl.h
diff --git a/src/conversions-inl.h b/src/conversions-inl.h
index 595ae9ed5b3401bb9b0eea8f3576869fdcd39e92..2f0a399d1a4d951296f933a35a3a40e90f954693 100644
--- a/src/conversions-inl.h
+++ b/src/conversions-inl.h
@@ -515,6 +515,32 @@ double InternalStringToDouble(UnicodeCache* unicode_cache,
                                           end,
                                           false,
                                           allow_trailing_junk);
+
+    // It could be an explicit octal value.
+    } else if ((flags & ALLOW_OCTAL) && (*current == 'o' || *current == 'O')) {
+      ++current;
+      if (current == end || !isDigit(*current, 8) || sign != NONE) {
+        return JunkStringValue();  // "0o".
+      }
+
+      return InternalStringToIntDouble<3>(unicode_cache,
+                                          current,
+                                          end,
+                                          false,
+                                          allow_trailing_junk);
+
+    // It could be a binary value.
+    } else if ((flags & ALLOW_BINARY) && (*current == 'b' || *current == 'B')) {
+      ++current;
+      if (current == end || !isBinaryDigit(*current) || sign != NONE) {
+        return JunkStringValue();  // "0b".
+      }
+
+      return InternalStringToIntDouble<1>(unicode_cache,
+                                          current,
+                                          end,
+                                          false,
+                                          allow_trailing_junk);
     }
 
     // Ignore leading zeros in the integer part.
@@ -524,7 +550,7 @@ double InternalStringToDouble(UnicodeCache* unicode_cache,
     }
   }
 
-  bool octal = leading_zero && (flags & ALLOW_OCTALS) != 0;
+  bool octal = leading_zero && (flags & ALLOW_IMPLICIT_OCTAL) != 0;
 
   // Copy significant digits of the integer part (if any) to the buffer.
   while (*current >= '0' && *current <= '9') {