Allow Objective-c++ to recognise lambdas.
gcc/cp:
* parser.c (cp_parser_primary_expression): If parsing an
objective-c++ message expression fails, see if a lambda is present.
(cp_parser_objc_message_receiver): Don't assume that, if a message
receiver expression fails, it is a hard error.
gcc/testsuite:
* obj-c++.dg/lambda-0.mm New.
* obj-c++.dg/lambda-1.mm New.
* obj-c++.dg/syntax-error-6.mm Adjust for revised error messages.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@219125 138bc75d-0d04-0410-961f-82ee72b054a4