[Bug libstdc++/56158] bad enum values computed by operator~ in ios_base.h

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56158

--- Comment #16 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Nov 25 16:11:40 2015
New Revision: 230884

URL: https://gcc.gnu.org/viewcvs?rev=230884&root=gcc&view=rev
Log:
Extend valid values of iostream bitmask types

Backport from mainline
2015-11-12  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/56158
        * include/bits/ios_base.h (_Ios_Fmtflags, _Ios_Openmode, _Ios_Iostate):
        Define enumerators to ensure all values of type int are valid values
        of the enumeration type.
        * testsuite/27_io/ios_base/types/fmtflags/case_label.cc: Add new cases.
        * testsuite/27_io/ios_base/types/iostate/case_label.cc: Likewise.
        * testsuite/27_io/ios_base/types/openmode/case_label.cc: Likewise.

Modified:
    branches/gcc-5-branch/libstdc++-v3/ChangeLog
    branches/gcc-5-branch/libstdc++-v3/include/bits/ios_base.h
   
branches/gcc-5-branch/libstdc++-v3/testsuite/27_io/ios_base/types/fmtflags/case_label.cc
   
branches/gcc-5-branch/libstdc++-v3/testsuite/27_io/ios_base/types/iostate/case_label.cc
   
branches/gcc-5-branch/libstdc++-v3/testsuite/27_io/ios_base/types/openmode/case_label.cc