Bug 1415021 - By-ref captured polymorphic method causes segfault
Summary: By-ref captured polymorphic method causes segfault
Alias: None
Product: Fedora
Classification: Fedora
Component: gcc
Version: 25
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2017-01-20 00:38 UTC by Alex Puchades
Modified: 2017-12-12 10:50 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2017-12-12 10:50:24 UTC
Type: Bug

Attachments (Terms of Use)
Preprocessed source (1.61 KB, text/x-csrc)
2017-01-20 00:38 UTC, Alex Puchades
no flags Details

Description Alex Puchades 2017-01-20 00:38:54 UTC
Created attachment 1242641 [details]
Preprocessed source

Description of problem:
Segmentation fault when compiling generic lambda capturing a polymorphic method that depends on type of argument passed.

Version-Release number of selected component (if applicable):
gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)

How reproducible:
Compile the following source file: http://pastebin.com/g2esaPVX

Steps to Reproduce:
1. wget http://pastebin.com/raw/g2esaPVX -O source.cpp
2. g++ -std=c++14 source.cpp -o source

Actual results:
source.cpp: In lambda function:
source.cpp:5:33: internal compiler error: Segmentation fault
                 ([&] (auto x) { foo(x); })(10);
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/cc1XAoUt.out file, please attach this to your bugreport.

Expected results:
(Successful compilation)

Additional info:

Comment 1 Alex Puchades 2017-01-20 00:42:37 UTC
Upstream not notified yet as I couldn't find a similar bug reported and bugzilla account is temporarily disabled.

Comment 2 Marek Polacek 2017-01-20 13:00:21 UTC
This is actually fixed on the trunk.  It was fixed in https://gcc.gnu.org/r244544.

Comment 3 Marek Polacek 2017-01-20 13:09:16 UTC
...which hasn't been backported to gcc-6 and I'm not sure if it's prudent to do so.

Comment 4 Fedora End Of Life 2017-11-16 18:45:51 UTC
This message is a reminder that Fedora 25 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 25. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '25'.

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Comment 5 Fedora End Of Life 2017-12-12 10:50:24 UTC
Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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