https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93323
Bug ID: 93323
Summary: Internal Compiler Error in unify at cp/pt.c:22219
Product: gcc
Version: 9.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: julius_huelsmann at freenet dot de
Target Milestone: ---
Created attachment 47678
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47678&action=edit
The source file which throws the bug.
Bug Description
---------------
I was experimenting a little bit with custom class template argument
deductions, and wrote the small c++ program. In case you would like to also
have the (single, 13 loc) source file, I can upload that, too. I tried to
adhere to the Bug submitting guidelines, and therefore only uploaded the .ii
file.
G++ Version and OS
------------------
g++ (GCC) 9.2.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Linux machine 5.4.12-arch1-1 #1 SMP PREEMPT Tue, 14 Jan 2020 21:44:31 +0000
x86_64 GNU/Linux
the options given when GCC was configured/built;
------------------------------------------------
I use the G++ version shipped with my operating system (binary via pacman).
the complete command line that triggers the bug;
------------------------------------------------
g++ -Wall -Wextra -std=c++2a -fno-strict-aliasing -fwrapv main5.cc
Compile Output
--------------
/home/juli/main5.cc:31:43: required from here
/home/juli/main5.cc:31:43: internal compiler error: in unify, at cp/pt.c:22219
31 | const Guided k{sh, sh2, Shield<321, 3>{}};
| ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
