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Bug 1613 - unsupported matrix log (M.log()) can hang when the operation is undefined
Summary: unsupported matrix log (M.log()) can hang when the operation is undefined
Status: NEW
Alias: None
Product: Eigen
Classification: Unclassified
Component: Unsupported modules (show other bugs)
Version: unspecified
Hardware: All All
: Normal Crash
Assignee: Nobody
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-10-18 09:21 UTC by Michael Tesch
Modified: 2019-12-04 18:02 UTC (History)
2 users (show)



Attachments
program demonstrating hang when calling M.log() (613 bytes, text/x-c++src)
2018-10-18 09:21 UTC, Michael Tesch
no flags Details

Description Michael Tesch 2018-10-18 09:21:23 UTC
Created attachment 886 [details]
program demonstrating hang when calling M.log()

The matrix log() function in unsupported/Eigen/MatrixFunctions can hang when the matrix is (not invertable, has no log...? I haven't investigated the exact conditions yet...)

Oddly, it only hangs for matrices bigger than 2x2.

Test program attached.

Tested on:
g++ (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6)
clang version 5.0.2 (tags/RELEASE_502/final)

Further info:

https://stackoverflow.com/questions/52831857/is-this-a-bug-in-the-eigen-matrix-log-implementation
Comment 1 Nobody 2019-12-04 18:02:21 UTC
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