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* [Bug c++/94897] New: range-for produces a variable initialiser with use of a forward decl.
@ 2020-04-30 20:48 iains at gcc dot gnu.org
2020-04-30 20:49 ` [Bug c++/94897] " iains at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: iains at gcc dot gnu.org @ 2020-04-30 20:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94897
Bug ID: 94897
Summary: range-for produces a variable initialiser with use of
a forward decl.
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: iains at gcc dot gnu.org
Target Milestone: ---
It seems that parser.c:cp_convert_range_for () is not implementing the lowering
that its header comment outlines.
for this:
#include <array>
void
foo ()
{
const std::array<int, 5> expectedValues = {{0, 3, 1, 4, 2}};
for (int expectedValue : expectedValues) {
;
}
}
we are getting the statement tree below, the key being (V = Var decl, Va =
artificial var decl) where the first entry initialiser contains a forward ref.
----
V int expectedValue = E (std::array<int, E <cst>5>::value_type)E *VD
foo::__for_begin;
Va const std::array<int, E <cst>5>& __for_range = E (const std::array<int, E
<cst>5>&)E &foo::expectedValues;
Va const std::array<int, E <cst>5>::value_type* __for_begin;
Va const std::array<int, E <cst>5>::value_type* __for_end;
=====
FD foo ()
- <STATEMENT_LIST>{
S BIND_EXPR [scope 0x10399a3c0] BLOCK #0 not outer [ao] 0x0
[super-ctx] 0x0 SUBBLOCKS 0x10399a360
VARS {
V const std::array<int, E <cst>5>expectedValues = {E CE {E <cst>0, E
<cst>3, E <cst>1, E <cst>4, E <cst>2}};
}
BODY {
- <STATEMENT_LIST>{
CPs<<sD const std::array<int, E <cst>5>expectedValues = {E CE {E <cst>0,
E <cst>3, E <cst>1, E <cst>4, E <cst>2}}; CPE>>
S BIND_EXPR [scope 0x10399a360] BLOCK #0 not outer [ao] 0x0
[super-ctx] 0x10399a3c0 SUBBLOCKS 0x0
VARS {
V int expectedValue = E (std::array<int, E <cst>5>::value_type)E *VD
foo::__for_begin;
Va const std::array<int, E <cst>5>& __for_range = E (const
std::array<int, E <cst>5>&)E &foo::expectedValues;
Va const std::array<int, E <cst>5>::value_type* __for_begin;
Va const std::array<int, E <cst>5>::value_type* __for_end;
}
BODY {
- <STATEMENT_LIST>{
sD const std::array<int, E <cst>5>& __for_range = E (const
std::array<int, E <cst>5>&)E &foo::expectedValues;
sD const std::array<int, E <cst>5>::value_type* __for_begin;
CPs<<S xE (void)E foo::__for_begin =
foo::__for_range.std::array<int, E <cst>5>::begin (); CPE>>
sD const std::array<int, E <cst>5>::value_type* __for_end;
CPs<<S xE (void)E foo::__for_end = foo::__for_range.std::array<int,
E <cst>5>::end (); CPE>>
sS for (; E CE foo::__for_begin != foo::__for_end; CPe<<E (void)E CE
++foo::__for_begin CPE>>)
sD int expectedValue = E (std::array<int, E <cst>5>::value_type)E
*VD foo::__for_begin;
}
}
}
}
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/94897] range-for produces a variable initialiser with use of a forward decl.
2020-04-30 20:48 [Bug c++/94897] New: range-for produces a variable initialiser with use of a forward decl iains at gcc dot gnu.org
@ 2020-04-30 20:49 ` iains at gcc dot gnu.org
2021-04-27 11:38 ` jakub at gcc dot gnu.org
2021-07-28 7:04 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: iains at gcc dot gnu.org @ 2020-04-30 20:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94897
Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Target Milestone|--- |11.0
Last reconfirmed| |2020-04-30
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/94897] range-for produces a variable initialiser with use of a forward decl.
2020-04-30 20:48 [Bug c++/94897] New: range-for produces a variable initialiser with use of a forward decl iains at gcc dot gnu.org
2020-04-30 20:49 ` [Bug c++/94897] " iains at gcc dot gnu.org
@ 2021-04-27 11:38 ` jakub at gcc dot gnu.org
2021-07-28 7:04 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-04-27 11:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94897
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.0 |11.2
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.1 has been released, retargeting bugs to GCC 11.2.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/94897] range-for produces a variable initialiser with use of a forward decl.
2020-04-30 20:48 [Bug c++/94897] New: range-for produces a variable initialiser with use of a forward decl iains at gcc dot gnu.org
2020-04-30 20:49 ` [Bug c++/94897] " iains at gcc dot gnu.org
2021-04-27 11:38 ` jakub at gcc dot gnu.org
@ 2021-07-28 7:04 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-07-28 7:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94897
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.2 |---
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-07-28 7:04 UTC | newest]
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2020-04-30 20:48 [Bug c++/94897] New: range-for produces a variable initialiser with use of a forward decl iains at gcc dot gnu.org
2020-04-30 20:49 ` [Bug c++/94897] " iains at gcc dot gnu.org
2021-04-27 11:38 ` jakub at gcc dot gnu.org
2021-07-28 7:04 ` rguenth at gcc dot gnu.org
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