https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83860
--- Comment #9 from Jonathan Wakely ---
Author: redi
Date: Wed May 2 16:41:46 2018
New Revision: 259844
URL: https://gcc.gnu.org/viewcvs?rev=259844=gcc=rev
Log:
PR libstdc++/83860 avoid dangling references in valarray closure types
Store nested closures by value not by reference, to prevent holding
invalid references to temporaries that have been destroyed. This
changes the layout of the closure types, so change their linkage names,
but moving them to a different namespace.
PR libstdc++/57997
PR libstdc++/83860
* include/bits/gslice_array.h (gslice_array): Define default
constructor as deleted, as per C++11 standard.
* include/bits/mask_array.h (mask_array): Likewise.
* include/bits/slice_array.h (slice_array): Likewise.
* include/bits/valarray_after.h (_GBase, _GClos, _IBase, _IClos): Move
to namespace __detail.
(_GBase::_M_expr, _IBase::_M_expr): Use _ValArrayRef for type of data
members.
* include/bits/valarray_before.h (_ValArrayRef): New helper for type
of data members in closure objects.
(_FunBase, _ValFunClos, _RefFunClos, _UnBase, _UnClos, _BinBase)
(_BinBase2, _BinBase1, _BinClos, _SBase, _SClos): Move to namespace
__detail.
(_FunBase::_M_expr, _UnBase::_M_expr, _BinBase::_M_expr1)
(_BinBase::_M_expr2, _BinBase2::_M_expr1, _BinBase1::_M_expr2)
(_SBase::_M_expr): Use _ValArrayRef for type of data members.
* include/std/valarray (_UnClos, _BinClos, _SClos, _GClos, _IClos)
(_ValFunClos, _RefFunClos): Move to namespace __detail and add
using-declarations to namespace std.
* testsuite/26_numerics/valarray/83860.cc: New.
Added:
trunk/libstdc++-v3/testsuite/26_numerics/valarray/83860.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/gslice_array.h
trunk/libstdc++-v3/include/bits/mask_array.h
trunk/libstdc++-v3/include/bits/slice_array.h
trunk/libstdc++-v3/include/bits/valarray_after.h
trunk/libstdc++-v3/include/bits/valarray_before.h
trunk/libstdc++-v3/include/std/valarray
