* [Bug c++/60943] [C++14] Return type deduction interferes with ref-qualifiers
[not found] <bug-60943-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2015-05-21 20:52 ` nathan at gcc dot gnu.org
@ 2015-05-22 6:18 ` anders at sjogren dot info
4 siblings, 0 replies; 5+ messages in thread
From: anders at sjogren dot info @ 2015-05-22 6:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60943
--- Comment #4 from Anders Sjögren <anders at sjogren dot info> ---
Thanks for fixing the bug!
It seems that the test file
https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/testsuite/g%2B%2B.dg/cpp1y/pr60943.C?view=markup&pathrev=223502
contains an error.
It contains:
void Bar (A &&a)
{
a.f ();
}
My guess is that it was meant to call the member function from an R-value
object a. However, as an l-value at the site of the call, and both Foo and Bar
will select the l-value version. Something like std::move(a).f() or just
A{}.f(); should do the trick.
>From gcc-bugs-return-487030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri May 22 06:20:54 2015
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From: "anders at sjogren dot info" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60943] [C++14] Return type deduction interferes with ref-qualifiers
Date: Fri, 22 May 2015 06:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60943
--- Comment #5 from Anders Sjögren <anders at sjogren dot info> ---
A typo snuck in...
"However, as an l-value at the site of the call[...]"
should be
"However, a is an l-value at the site of the call[...]"
>From gcc-bugs-return-487031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri May 22 06:38:43 2015
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From: "anders at sjogren dot info" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60943] [C++14] Return type deduction interferes with ref-qualifiers
Date: Fri, 22 May 2015 06:38:00 -0000
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--- Comment #6 from Anders Sjögren <anders at sjogren dot info> ---
An alternative test case, which also tests that the correct version is
selected, could be:
#include <type_traits>
using expected_lvalue_res_t = int;
using expected_rvalue_res_t = double;
struct A {
auto f() & {return expected_lvalue_res_t{};}
auto f() && {return expected_rvalue_res_t{};}
};
void lvalue_assert()
{
A a;
a.f();
static_assert(std::is_same<decltype(a.f()),
expected_lvalue_res_t>::value,"");
}
void rvalue_assert()
{
A{}.f();
static_assert(std::is_same<decltype(A{}.f()),
expected_rvalue_res_t>::value,"");
}
>From gcc-bugs-return-487032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri May 22 06:41:08 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/66251] New: [6 Regression] ICE in vect_get_vec_def_for_operand, at tree-vect-stmts.c:1484
Date: Fri, 22 May 2015 06:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf251
Bug ID: 66251
Summary: [6 Regression] ICE in vect_get_vec_def_for_operand, at
tree-vect-stmts.c:1484
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: Joost.VandeVondele at mat dot ethz.ch
Target Milestone: ---
recent regression (last day):
gcc version 6.0.0 20150522 (experimental) [trunk revision 223512] (GCC)
> cat bug.f90
SUBROUTINE dbcsr_data_convert (n)
COMPLEX(KIND=4), DIMENSION(:), POINTER :: s_data_c
COMPLEX(KIND=8), DIMENSION(:), POINTER :: t_data_z
t_data_z(1:n) = CMPLX(s_data_c(1:n), KIND=8)
CALL foo()
END SUBROUTINE dbcsr_data_convert
> gfortran -c -O3 bug.f90
bug.f90:1:0:
SUBROUTINE dbcsr_data_convert (n)
^
internal compiler error: in vect_get_vec_def_for_operand, at
tree-vect-stmts.c:1484
0xd97159 vect_get_vec_def_for_operand(tree_node*, gimple_statement_base*,
tree_node**)
../../gcc/gcc/tree-vect-stmts.c:1484
0xda51e3 vectorizable_store
../../gcc/gcc/tree-vect-stmts.c:5315
0xda7fbd vect_transform_stmt(gimple_statement_base*, gimple_stmt_iterator*,
bool*, _slp_tree*, _slp_instance*)
../../gcc/gcc/tree-vect-stmts.c:7466
0xdc6279 vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3502
0xdc6a90 vect_schedule_slp(_loop_vec_info*, _bb_vec_info*)
../../gcc/gcc/tree-vect-slp.c:3572
0xdafdf7 vect_transform_loop(_loop_vec_info*)
../../gcc/gcc/tree-vect-loop.c:6165
0xdcea3e vectorize_loops()
../../gcc/gcc/tree-vectorizer.c:502
Please submit a full bug report,
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