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* [Bug c++/96095] New: decltype((r)) inside of lambda with copy capture gives wrong type
@ 2020-07-07 15:06 barry.revzin at gmail dot com
2020-07-07 15:35 ` [Bug c++/96095] " mpolacek at gcc dot gnu.org
2021-12-03 9:42 ` pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: barry.revzin at gmail dot com @ 2020-07-07 15:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96095
Bug ID: 96095
Summary: decltype((r)) inside of lambda with copy capture gives
wrong type
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: barry.revzin at gmail dot com
Target Milestone: ---
Couldn't find a dupe for this one. The example from what is now
[expr.prim.id.unqual]/2 (http://eel.is/c++draft/expr.prim.id.unqual#2) doesn't
have the expected behavior:
template <typename T, typename U>
inline constexpr bool is_same_v = false;
template <typename T>
inline constexpr bool is_same_v<T, T> = true;
void f(float x, float& r) {
[=] {
static_assert(is_same_v<decltype(x), float>);
static_assert(is_same_v<decltype((x)), float const&>);
static_assert(is_same_v<decltype(r), float&>);
static_assert(is_same_v<decltype((r)), float const&>); // error
}();
}
gcc reports decltype((r)) to be float&, not float const& here.
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug c++/96095] decltype((r)) inside of lambda with copy capture gives wrong type 2020-07-07 15:06 [Bug c++/96095] New: decltype((r)) inside of lambda with copy capture gives wrong type barry.revzin at gmail dot com @ 2020-07-07 15:35 ` mpolacek at gcc dot gnu.org 2021-12-03 9:42 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 3+ messages in thread From: mpolacek at gcc dot gnu.org @ 2020-07-07 15:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96095 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org Keywords| |rejects-valid Status|UNCONFIRMED |NEW Last reconfirmed| |2020-07-07 Ever confirmed|0 |1 --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Confirmed. The [expr.prim.id.unqual]/2 example comes from P0588R1 Simplifying implicit lambda capture. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/96095] decltype((r)) inside of lambda with copy capture gives wrong type 2020-07-07 15:06 [Bug c++/96095] New: decltype((r)) inside of lambda with copy capture gives wrong type barry.revzin at gmail dot com 2020-07-07 15:35 ` [Bug c++/96095] " mpolacek at gcc dot gnu.org @ 2021-12-03 9:42 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 3+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-12-03 9:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96095 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |DUPLICATE Status|NEW |RESOLVED --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Dup of bug 79620. *** This bug has been marked as a duplicate of bug 79620 *** ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-12-03 9:42 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-07-07 15:06 [Bug c++/96095] New: decltype((r)) inside of lambda with copy capture gives wrong type barry.revzin at gmail dot com 2020-07-07 15:35 ` [Bug c++/96095] " mpolacek at gcc dot gnu.org 2021-12-03 9:42 ` pinskia at gcc dot gnu.org
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