C++11 std ref to ECMAScript (Javascript) spec?

Question

In the C++11 standard document it says:

The following referenced documents are indispensable for the application of this document:

• Ecma International, ECMAScript Language Specification, Standard Ecma-262, third edition, 1999.

What exactly is the dependency of the C++11 spec on the Javascript spec?

Answer 1

The section "28.13 Modified ECMAScript regular expression grammar" depends on ECMA-262:

28.13 Modified ECMAScript regular expression grammar [re.grammar]

1 The regular expression grammar recognized by basic_regex objects constructed with the ECMAScript flag is that specified by ECMA-262, except as specified below.

The regular expression grammar is specified in section 15.10 RegExp (Regular Expression) Objects and A.7 Regular Expressions in ECMA-262.