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Bug 1744244

Summary:	gcc-c++ compiler crash, templated code, "emit_move_insn, at expr.c:3698"
Product:	Red Hat Developer Toolset	Reporter:	Marek Polacek <mpolacek>
Component:	gcc	Assignee:	Marek Polacek <mpolacek>
Status:	CLOSED ERRATA	QA Contact:	Alexandra Petlanová Hájková <ahajkova>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	DTS 7.1 RHEL 7	CC:	ahajkova, aoliva, davejohansen, dmalcolm, extras-qa, fweimer, jakub, jwakely, law, mcermak, mnewsome, mpolacek, msebor, nickc, ohudlick, tborcin, tesch1
Target Milestone:	alpha
Target Release:	9.0
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	devtoolset-7-gcc-7.3.1-5.16.el6	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1570308	Environment:
Last Closed:	2019-09-11 01:35:33 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1570308
Bug Blocks:

Description Marek Polacek 2019-08-21 15:41:02 UTC

+++ This bug was initially created as a clone of Bug #1570308 +++

Description of problem:
gcc-c++ crashes on compilation of templated test code.

Version-Release number of selected component (if applicable):
$ /usr/bin/c++ --version
c++ (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5)

How reproducible:

every time.

Steps to Reproduce:

1. try to compile a test program (see attachment)
2. crash.
3.

Actual results:

internal compiler error: in emit_move_insn, at expr.c:3698
   temp.rpart() = pow(xx.rpart(), aa);
   ^~~~
Please submit a full bug report,
with preprocessed source if appropriate.


Expected results:

working compiled program.

Additional info:

The original source is here: https://github.com/tesch1/cxxduals crash is in compiling test2.cpp
This is on latest up-to-date fedora 27.  Let me know if you need any other info.

Google finds this: https://gcc.gnu.org/ml/gcc/2017-01/msg00211.html

--- Additional comment from Marek Polacek on 2018-04-22 16:39:40 UTC ---

Started with http://gcc.gnu.org/r244249.

--- Additional comment from Marek Polacek on 2018-08-10 13:27:52 UTC ---

Fixed in 8.0.1-0.22.

--- Additional comment from Marek Polacek on 2018-08-10 13:28:18 UTC ---

And fixed for GCC 7 too.

--- Additional comment from  on 2018-08-10 17:14:30 UTC ---

Nice!  Thanks!

Comment 2 Marek Polacek 2019-08-21 15:42:31 UTC

We already have a build with this fixed.

Comment 6 errata-xmlrpc 2019-09-11 01:35:33 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:2727