[Bug c++/70822] [6/7 Regression] bogus "error: lvalue required as unary ‘&’ operand" with C++14 parenthesized SCOPE_REF

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70822

--- Comment #2 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Author: ppalka
Date: Thu May 26 18:17:43 2016
New Revision: 236792

URL: https://gcc.gnu.org/viewcvs?rev=236792&root=gcc&view=rev
Log:
Fix PR c++/70822 (bogus error with parenthesized SCOPE_REF)

gcc/cp/ChangeLog:

        PR c++/70822
        PR c++/70106
        * cp-tree.h (REF_PARENTHESIZED_P): Make this flag apply to
        SCOPE_REFs too.
        * pt.c (tsubst_qualified_id): If REF_PARENTHESIZED_P is set
        on the qualified_id then propagate it to the resulting
        expression.
        (do_auto_deduction): Check REF_PARENTHESIZED_P on SCOPE_REFs
        too.
        * semantics.c (force_paren_expr): If given a SCOPE_REF, just set
        its REF_PARENTHESIZED_P flag.

gcc/testsuite/ChangeLog:

        PR c++/70822
        PR c++/70106
        * g++.dg/cpp1y/auto-fn32.C: New test.
        * g++.dg/cpp1y/paren4.C: New test.


Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/auto-fn32.C
    trunk/gcc/testsuite/g++.dg/cpp1y/paren4.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog