0001702: File comparison reports that files are identical when trailing bytes are different

ID	Project	Category	View Status	Date Submitted	Last Update

0001702	Double Commander	Default	public	2017-01-20 00:51	2020-11-30 07:43

Reporter	daniel	Assigned To	Alexx2000
Priority	normal	Severity	minor	Reproducibility	always
Status	closed	Resolution	fixed
Projection	none	ETA	none
Product Version	0.7.7	Product Build	7285
Target Version	0.7.8	Fixed in Version	0.7.8

Summary	0001702: File comparison reports that files are identical when trailing bytes are different
Description	The file comparison says that two binary files are identical when one of them has some extra bytes (while the rest of the data is the same). For example: 1.bin: \x00abc 2.bin: \x00abcd Here, the data in both files is the same, except that 2.bin has an extra "d" bite. Obviously, the files are different, but DC says that they are the same.
Steps To Reproduce	Try to compare attached files.
Tags	No tags attached.
Attached Files	1.bin (4 bytes) 2.bin (5 bytes)

Fixed in Revision	7335,7361
Operating system	Linux
Widgetset	GTK2
Architecture

Date Modified	Username	Field	Change
2017-01-20 00:51	daniel	New Issue
2017-01-20 00:51	daniel	File Added: 1.bin
2017-01-20 00:51	daniel	File Added: 2.bin
2017-01-20 00:56	daniel	Note Added: 0002050
2017-01-20 21:25	Alexx2000	Assigned To	=> Alexx2000
2017-01-20 21:25	Alexx2000	Status	new => assigned
2017-01-20 21:25	Alexx2000	Target Version	=> 0.7.8
2017-01-20 22:22	Alexx2000	Fixed in Revision	=> 7335
2017-01-20 22:22	Alexx2000	Status	assigned => resolved
2017-01-20 22:22	Alexx2000	Resolution	open => fixed
2017-01-29 17:17	Alexx2000	Fixed in Revision	7335 => 7335,7361
2017-01-29 17:17	Alexx2000	Fixed in Version	=> 0.7.8
2020-11-30 07:43	Alexx2000	Status	resolved => closed

daniel 2017-01-20 00:56 reporter ~0002050	This only happens in binary mode. The difference is highlighted correctly, so the only problem is the pop-up dialog that says that files are the same while they are actually different.