Proposed resolution (June, 2010):
Change 8.6 [stmt.iter] paragraph 1 as follows:
Iteration statements specify looping.
iteration-statement:
while ( condition ) statement
do statement while ( expression ) ;
for ( for-init-statement conditionopt ; expressionopt ) statement
for ( for-range-declaration :
expressionfor-range-initializer ) statement
for-init-statement:
expression-statement
simple-declaration
for-range-declaration:
type-specifier-seq attribute-specifieropt declarator
for-range-initializer:
expression
braced-init-list
[Note: a for-init-statement ends with a semicolon. —end note]
Change 8.6.5 [stmt.ranged] paragraph 1 as follows:
TheFor a range-based for statement of the formfor ( for-range-declaration : expression ) statement
let range-init be equivalent to the expression surrounded by parentheses:
( expression )
[Footnote: this ensures that a top-level comma operator cannot be reinterpreted as a delimiter between init-declarators in the declaration of __range. —end footnote] and for a range-based for statement of the form
for ( for-range-declaration : braced-init-list ) statement
let range-init be equivalent to the braced-init-list. In each case, a range-based for statement is equivalent to
{ auto && __range =( expression )range-init; for ( auto __begin = begin-expr, ...