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* [Bug c++/67934] New: [concepts] ICE when providing default function implementations using concepts
@ 2015-10-12 14:24 michel.steuwer at gmail dot com
2015-10-12 14:40 ` [Bug c++/67934] " trippels at gcc dot gnu.org
2021-11-12 0:00 ` pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: michel.steuwer at gmail dot com @ 2015-10-12 14:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67934
Bug ID: 67934
Summary: [concepts] ICE when providing default function
implementations using concepts
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: michel.steuwer at gmail dot com
Target Milestone: ---
Created attachment 36483
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36483&action=edit
Contains test case with preprocessed file.
The following code fails with an ICE:
===
#include <iostream>
template <typename T>
concept bool
JustEqualityComparable() {
return requires(T a, T b) {
{ a == b } -> bool;
};
}
template <typename T>
concept bool
JustInequalityComparable() {
return requires(T a, T b) {
{ a != b } -> bool;
};
}
bool operator==(const JustInequalityComparable& a1,
const JustInequalityComparable& a2) {
return !(a1 != a2);
}
bool operator!=(const JustEqualityComparable& a1,
const JustEqualityComparable& a2) {
return !(a1 == a2);
}
template <typename T>
requires JustEqualityComparable<T>()
bool useEq(T t1, T t2) {
return t1 == t2;
}
struct A {
int a;
};
bool operator==(const A& a1, const A& a2) {
return a1.a == a2.a;
}
int main() {
using namespace std;
cout << boolalpha << useEq(A{4}, A{6}) << "\n";
return 0;
}
===
~/bin/gcc/bin/g++ -std=c++1z -save-temps foo.cpp
g++: internal compiler error: Segmentation fault (program cc1plus)
Removing either the operator in line 19 or 24 makes the program compile.
Replacing the operator implemented with concepts in line 19 by a plain template
version makes the program compile as well.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/67934] [concepts] ICE when providing default function implementations using concepts
2015-10-12 14:24 [Bug c++/67934] New: [concepts] ICE when providing default function implementations using concepts michel.steuwer at gmail dot com
@ 2015-10-12 14:40 ` trippels at gcc dot gnu.org
2021-11-12 0:00 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: trippels at gcc dot gnu.org @ 2015-10-12 14:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67934
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-10-12
CC| |trippels at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
It is a stack overflow. Could be a dup of PR67595.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/67934] [concepts] ICE when providing default function implementations using concepts
2015-10-12 14:24 [Bug c++/67934] New: [concepts] ICE when providing default function implementations using concepts michel.steuwer at gmail dot com
2015-10-12 14:40 ` [Bug c++/67934] " trippels at gcc dot gnu.org
@ 2021-11-12 0:00 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-11-12 0:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67934
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is a dup of bug 81717.
PR 81717#c2 explains the same behavior here.
*** This bug has been marked as a duplicate of bug 81717 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-11-12 0:00 UTC | newest]
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2015-10-12 14:24 [Bug c++/67934] New: [concepts] ICE when providing default function implementations using concepts michel.steuwer at gmail dot com
2015-10-12 14:40 ` [Bug c++/67934] " trippels at gcc dot gnu.org
2021-11-12 0:00 ` pinskia at gcc dot gnu.org
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