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* [Bug libstdc++/94241] New: ranges::find_if doesn't like data structures defined in a function
@ 2020-03-20 17:43 cjdb.ns at gmail dot com
2020-03-20 17:45 ` [Bug libstdc++/94241] " cjdb.ns at gmail dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: cjdb.ns at gmail dot com @ 2020-03-20 17:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94241
Bug ID: 94241
Summary: ranges::find_if doesn't like data structures defined
in a function
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: cjdb.ns at gmail dot com
Target Milestone: ---
ranges::find_if chucks a wobbly when a struct is defined inside a function.
Seems to cooperate if the struct is in global scope.
# Diagnostic
```
In file included from
/usr/local/include/c++/10.0.1/bits/stl_iterator_base_types.h:71,
from /usr/local/include/c++/10.0.1/bits/stl_algobase.h:65,
from /usr/local/include/c++/10.0.1/algorithm:61,
from ice.cpp:1:
/usr/local/include/c++/10.0.1/bits/iterator_concepts.h:669:40: error:
'std::indirect_result_t<_Proj&, _Iter> std::projected<_Iter,
_Proj>::operator*() const [with _Iter = main()::s*; _Proj = std::identity;
std::indirect_result_t<_Proj&, _Iter> = main()::s&]', declared using local type
'main()::s', is used but never defined [-fpermissive]
669 | indirect_result_t<_Proj&, _Iter> operator*() const; // not
defined
|
```
# System info
OS: Ubuntu 18.04 (WSL)
Version: gcc (GCC) 10.0.1 20200320 (experimental)
Git hash:
Configured with: ../gcc/configure --disable-nls --disable-multilib
--enable-languages=c,c++ --disable-werror : (reconfigured) ../gcc/configure
--disable-nls --disable-multilib --enable-languages=c,c++ --disable-werror :
(reconfigured) ../gcc/configure --disable-nls --disable-multilib
--disable-werror CC=/usr/local/bin/gcc CFLAGS='-O3 -g0 -w'
LDFLAGS=-fuse-ld=gold CXX=/usr/local/bin/g++ CXXFLAGS='-O3 -g0 -w'
--enable-languages=c,c++,lto --no-create --no-recursion
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/94241] ranges::find_if doesn't like data structures defined in a function
2020-03-20 17:43 [Bug libstdc++/94241] New: ranges::find_if doesn't like data structures defined in a function cjdb.ns at gmail dot com
@ 2020-03-20 17:45 ` cjdb.ns at gmail dot com
2020-03-20 17:52 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: cjdb.ns at gmail dot com @ 2020-03-20 17:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94241
--- Comment #1 from Christopher Di Bella <cjdb.ns at gmail dot com> ---
Created attachment 48074
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48074&action=edit
Temp for minimal repro
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/94241] ranges::find_if doesn't like data structures defined in a function
2020-03-20 17:43 [Bug libstdc++/94241] New: ranges::find_if doesn't like data structures defined in a function cjdb.ns at gmail dot com
2020-03-20 17:45 ` [Bug libstdc++/94241] " cjdb.ns at gmail dot com
@ 2020-03-20 17:52 ` pinskia at gcc dot gnu.org
2020-03-20 17:52 ` [Bug c++/94241] " pinskia at gcc dot gnu.org
2020-03-20 21:07 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2020-03-20 17:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94241
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
#include <algorithm>
int main()
{
struct s { int m; };
s r[] = { s{0}, s{1}, s{2}, s{3} };
std::ranges::find_if(r, [](auto const) { return true; });
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/94241] ranges::find_if doesn't like data structures defined in a function
2020-03-20 17:43 [Bug libstdc++/94241] New: ranges::find_if doesn't like data structures defined in a function cjdb.ns at gmail dot com
2020-03-20 17:45 ` [Bug libstdc++/94241] " cjdb.ns at gmail dot com
2020-03-20 17:52 ` pinskia at gcc dot gnu.org
@ 2020-03-20 17:52 ` pinskia at gcc dot gnu.org
2020-03-20 21:07 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2020-03-20 17:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94241
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Component|libstdc++ |c++
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This looks like a front-end issue rather than a library issue.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/94241] ranges::find_if doesn't like data structures defined in a function
2020-03-20 17:43 [Bug libstdc++/94241] New: ranges::find_if doesn't like data structures defined in a function cjdb.ns at gmail dot com
` (2 preceding siblings ...)
2020-03-20 17:52 ` [Bug c++/94241] " pinskia at gcc dot gnu.org
@ 2020-03-20 21:07 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2020-03-20 21:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94241
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|UNCONFIRMED |RESOLVED
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> This looks like a front-end issue rather than a library issue.
Yes. I hit this when I started implementing the ranges:: algos and trying to
test them, and reported it as PR 92894.
*** This bug has been marked as a duplicate of bug 92894 ***
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-03-20 21:07 UTC | newest]
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2020-03-20 17:43 [Bug libstdc++/94241] New: ranges::find_if doesn't like data structures defined in a function cjdb.ns at gmail dot com
2020-03-20 17:45 ` [Bug libstdc++/94241] " cjdb.ns at gmail dot com
2020-03-20 17:52 ` pinskia at gcc dot gnu.org
2020-03-20 17:52 ` [Bug c++/94241] " pinskia at gcc dot gnu.org
2020-03-20 21:07 ` redi at gcc dot gnu.org
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