https://bugs.freedesktop.org/show_bug.cgi?id=78513
Priority: medium
Bug ID: 78513
Assignee: [email protected]
Summary: Other: Buffer overrun in Python UNO initialization
(possibly explaining random errors)
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: [email protected]
Hardware: Other
Whiteboard: BSA
Status: UNCONFIRMED
Version: 4.2.4.1 rc
Component: Spreadsheet
Product: LibreOffice
Created attachment 98799
--> https://bugs.freedesktop.org/attachment.cgi?id=98799&action=edit
Test script which runs valgrind with desired args on libre office
Valgrind reports some 8-byte reads which extend 4 bytes beyond the end of
malloc'd space. This would cause unpredictable garbage to be returend in the
last 4 bytes, and might possibly explain some "unreproducible" bugs I've been
chasing in some Basic macros. The problem exists in LO 4.2.4.0 but I'm
attaching traces from 4.3-alpha1 (May 5 build).
Here's typical valgrind output (greatly reduced):
== Invalid read of size 8
== at: __wcscpy_ssse3 (wcscpy-ssse3.S:146)
== by: calculate_path (getpath.c:751)
== by: Py_GetProgramFullPath (getpath.c:879)
== by: _PySys_Init (sysmodule.c:1615)
== by: _Py_InitializeEx_Private (pythonrun.c:338)
== by: pyuno_loader::CreateInstance() in
/opt/libreofficedev4.3.SAVED_May4/program/libpythonloaderlo.so
-snip-
== Address 0x1fd01478 is 1,544 bytes inside a block of size 1,548 alloc'd
The full trace log will be attached
Steps to reproduce:
1. Download the attached "test.sh" script and "spreadsheet.ods"
2. Edit test.sh to point to your LO install dir, or else pass
arguments /path/to/libreofficedir spreadsheet.ods
3. When prompted to enable macros, click NO (do not enable)
4. When the document is opened, just close it; the test is done
Current behavior: valgrind reports buffer overruns
Expected behavior: not that
Operating System: Ubuntu
Version: 4.2.4.1 rc
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