https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100611
Bug ID: 100611
Summary: coroutines: destructor called too many times for
coroutine lambda stored object
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: nilsgladitz at gmail dot com
Target Milestone: ---
Created attachment 50816
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50816&action=edit
test case
Given the attached test case compiled and run with e.g.
g++ test.cpp -std=c++20 -fcoroutines && ./a.out
produces the output:
Foo(23) 0x55c938eb5ed4
Foo(const& 23) 0x55c938eb5ee4
~Foo(23) 0x55c938eb5ee0
~Foo(23) 0x55c938eb5ee4
~Foo(23) 0x55c938eb5ed4
Indicating that "Foo" is constructed more often than it gets destructed.
This may be a variation of or related to bug 99576 which my test case is based
on.
Bug 99576 seems to be observable in 10.2 while this new issue seems to be
observable in 10.3 and 11.1.
Bisecting the gcc-10 release branch the dividing commit seems to be:
commit f43a1b1d1718969423337190ddbbbc9037c67783
Author: Iain Sandoe <i...@sandoe.co.uk>
Date: Sun Jul 19 18:39:21 2020 +0100
coroutines: Correct frame capture of compiler temps [PR95591+4].
