Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Assertion hit in the codegen #6115

Closed
monetdb-team opened this issue Nov 30, 2020 · 0 comments
Closed

Assertion hit in the codegen #6115

monetdb-team opened this issue Nov 30, 2020 · 0 comments

Comments

@monetdb-team
Copy link

@monetdb-team monetdb-team commented Nov 30, 2020

Date: 2016-11-09 11:05:15 +0100
From: Dean De Leo <>
To: SQL devs <>
Version: -- development
CC: @njnes

Last updated: 2016-12-21 13:07:46 +0100

Comment 24658

Date: 2016-11-09 11:05:15 +0100
From: Dean De Leo <>

User-Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36
Build Identifier:

Hello, I'm hitting the attached assertion somewhere in the codegen.

On Linux, tip of the default branch, debug build, empty tables.

Reproducible: Always

Steps to Reproduce:

  1. Start a fresh of mserver5
  2. Issue the attached query. The schema is included.
  3. Boom

Actual Results:

See attached back trace.

Expected Results:

Server failures are bad. Assuming they should never occur.

Comment 24659

Date: 2016-11-09 11:05:56 +0100
From: Dean De Leo <>

Created attachment 495
Repro query, schema included

Attached file: query2_crash_repro.sql (application/sql, 1396 bytes)
Description: Repro query, schema included

Comment 24660

Date: 2016-11-09 11:06:44 +0100
From: Dean De Leo <>

Created attachment 496
Backtrace

Attached file: backtrace2.txt (text/plain, 7597 bytes)
Description: Backtrace

Comment 24671

Date: 2016-11-09 23:07:09 +0100
From: MonetDB Mercurial Repository <>

Changeset bfc05edc1fa1 made by Niels Nes niels@cwi.nl in the MonetDB repo, refers to this bug.

For complete details, see http//devmonetdborg/hg/MonetDB?cmd=changeset;node=bfc05edc1fa1

Changeset description:

fixes for bugs 6114, 6115, 6116 and 6117

improved dead code elimination for cases with references to sub queries (ie its a dag)
push simple select like expressions downs

split_project test is added here but only crashes in the dec2016/default.

Comment 24675

Date: 2016-11-10 08:05:29 +0100
From: @njnes

fixed by the some solution as bug #6114 (ie dead code elimination)

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Linked pull requests

Successfully merging a pull request may close this issue.

None yet
1 participant