[Bug c++/69631] [6 Regression] Bogus overflow in constant expression error

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69631

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Feb  8 15:31:47 2016
New Revision: 233216

URL: https://gcc.gnu.org/viewcvs?rev=233216&root=gcc&view=rev
Log:
        PR c++/69631

gcc/
        * convert.c (convert_to_integer_1): Check dofold on truncation
        distribution.
        (convert_to_pointer_maybe_fold, convert_to_real_maybe_fold)
        (convert_to_integer_maybe_fold, convert_to_complex_maybe_fold):
        Rename from *_nofold.
        * convert.h (convert_to_pointer_nofold, convert_to_integer_nofold)
        (convert_to_real_nofold, convert_to_complex_nofold): New inlines.
gcc/cp/
        * cp-tree.h (CONV_FOLD, CONV_BACKEND_CONVERT): New.
        * cvt.c (convert): Pass CONV_BACKEND_CONVERT.
        (ocp_convert): Use *_maybe_fold.
        (cp_convert_to_pointer): Add dofold parameter.
        * cp-gimplify.c (cp_fold) [CONVERT_EXPR]: Call convert.

Added:
    trunk/gcc/testsuite/g++.dg/delayedfold/fwrapv1.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/convert.c
    trunk/gcc/convert.h
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-gimplify.c
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/cvt.c