Public bug reported:
Version: 4.2.0+git20170914-1 (Ubuntu 18.04.1 LTS)
Test case:
---
S a;
L expr = a*(1+a);
factorize;
.end
---
Output:
---
FORM 4.2 (Sep 14 2017) 64-bits Run: Thu Nov 8 11:22:11 2018
S a;
L expr = a*(1+a);
factorize;
print +s;
.end
Time = 0.00 sec Generated terms = 2
expr Terms in output = 2
Bytes used = 60
Program terminating at test.frm Line 4 -->
0.00 sec out of 0.00 sec
---
The binary available at
https://github.com/vermaseren/form/releases/download/v4.2.0/form-4.2.0-x86_64-linux.tar.gz
poses no problem and outputs:
---
FORM 4.2.0 (Jul 6 2017, v4.2.0) 64-bits Run: Thu Nov 8 11:22:37 2018
S a;
L expr = a*(1+a);
factorize;
print +s;
.end
Time = 0.00 sec Generated terms = 2
expr Terms in output = 2
Bytes used = 60
Time = 0.00 sec Generated terms = 3
expr Terms in output = 3
factorize Bytes used = 136
expr =
* ( 1
+ a
)
* ( a
);
0.00 sec out of 0.00 sec
---
** Affects: form (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1802272
Title:
broken factorization
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