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Author SHA1 Message Date
Richard Smith 8ee39e31bb Implement P0036R0: remove support for empty unary folds of +, *, |, &. 
llvm-svn: 262747
 2016-03-04 21:27:21 +00:00
Richard Smith ea97e36dfc Fix parsing of fold-expressions within a cast expression. We parse the 
parenthesized expression a bit differently in this case, just in case the
commas have special meaning.

llvm-svn: 221661
 2014-11-11 03:28:50 +00:00
Richard Smith 0f0af19b05 [c++1z] N4295: fold-expressions. 
This is a new form of expression of the form:

  (expr op ... op expr)

where one of the exprs is a parameter pack. It expands into

  (expr1 op (expr2onwards op ... op expr))

(and likewise if the pack is on the right). The non-pack operand can be
omitted; in that case, an empty pack gives a fallback value or an error,
depending on the operator.

llvm-svn: 221573
 2014-11-08 05:07:16 +00:00