[Libreoffice-bugs] [Bug 108851] New: Libre Office Calc allocates memory endlessly after copy-and-paste of formula definition

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=108851

            Bug ID: 108851
           Summary: Libre Office Calc allocates memory endlessly after
                    copy-and-paste of formula definition
           Product: LibreOffice
           Version: 5.1.6.2 release
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: gael.lorieulgl at laposte.net

Description:
In libre office calc, under certain conditions (see "steps to reproduce
section"), editing a formula and copy-pasting a part of its definition causes
LibreOffice to freeze but also (more troublesome) endless allocation of memory
until no free RAM remains and the OS as a whole freezes.

Tested on linux mint 18.1 Serena, with the default & up-to-date LibreOffice
version of this distribution.


Steps to Reproduce:
1. Open libreoffice calc

2. Insert formula (Insert > Object > Formula)

3. Copy-paste the following formula:

{1}over{h^3}
left[
matrix{ c_1 # c_4 # 0 # -c_4 # -c_1 ##
        c_2 # c_5 # 0 # -c_5 # -c_2 ##
        c_3 # c_6 # 0 # -c_6 # -c_3 } 
right]

4. place your cursor before "c_1" i.e. "matrix{ |c_1" where "|" represents
cursor
5. press shift + downArrow : you are selecting a line
6. Ctrl + C : you are copying this line
7. Place cursor before closing brace i.e. "-c_3 |}" where "|" represents cursor
8. Hit Ctrl + V




Actual Results:  
At that point LO freezes. I have the "System monitor" applet for Mate and I can
see the used RAM value increasing linearly in time until there is no more free
RAM and the OS as a whole freezes.

Expected Results:
Simple paste, with LO not freezing and not allocating crazy amounts of memory.


Reproducible: Always

User Profile Reset: No

Additional Info:


User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101
Firefox/54.0

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