Several bugs are detected by SAST tools

[ProjectMutilation]

Hi guys! Static analysis tools detected a some potential weakness in your project

• 1

QXlsx/WebServer/recurse.hpp in line 526: Access of moved variable 'prev'.

• 2

This errors are classified as CWE-457. It might cause undefined behavior 
QXlsx/header/xlsxchart_p.h in line 38: Not all members of a class are initialized inside the constructor. Consider inspecting: type, axisPos, axisId, crossAx.
QXlsx/source/xlsxchart.cpp in line 17: Not all members of a class are initialized inside the constructor. Consider inspecting: sheet, legendPos, legendOverlay, majorGridlinesEnabled, minorGridlinesEnabled.

• 3

QXlsx/source/xlsxzipreader.cpp in line 57: An excessive check can be simplified. The '||' operator is surrounded by opposite expressions 'fi.isFile' and '!fi.isFile'. 
This error is classified as CWE-571

• 4

QXlsx/source/xlsxstyles.cppin lines 618 and 621: The conditional expressions of the 'if' statements situated alongside each other are identical. 

• 5

QXlsx/source/xlsxworksheet.cpp: The use of 'if (A) {...} else if (A) {...}' pattern was detected. There is a probability of logical error presence. Check lines: 796, 812.
It is strange code

• 6

QXlsx/source/xlsxworksheet.cpp in 1411 There are identical sub-expressions '!(d->MoodFooter.isNull())' to the left and to the right of the '||' operator.

Also static analysis tools reported several minor issues which might be good to fix

• 1

QXlsx/source/xlsxdrawinganchor.cpp in line 665
The '!xIn_w.isEmpty()' condition was already verified in line 664.
QXlsx/source/xlsxdrawinganchor.cpp  in line 875 
The '!xIn_w.isEmpty()' condition was already verified in line 874.
This checks are not required. It is error that classified as CWE-571.

• 2

File: QXlsx/QXlsx/source/xlsxconditionalformatting.cpp
Line 188: Expression 'type >= Highlight_LessThan' is always true.
Line 203: Expression 'type >= Highlight_ContainsText' is always true.
Line 247: Expression 'type >= Highlight_Top' is always true.
Line 255: Expression 'type >= Highlight_AboveAverage' is always true.
Line 257: Expression 'type <= Highlight_BelowStdDev3' is always true.
It is possible wrong logic 

• 3

QXlsx/source/xlsxworksheet.cpp in line 2439: The 'cellType' variable was assigned the same value.

• 4

QXlsx/source/xlsxrelationships.cpp:72: It is odd that the body of 'worksheetRelationships' function is fully equivalent to the body of 'documentRelationships' function.

• 5

QXlsx/source/xlsxdocpropscore.cpp:104: Two similar code fragments were found. Perhaps, this is a typo and 'cp' variable should be used instead of 'dc'.

• 6

QXlsx/source/xlsxworkbook.cpp:546: The code contains the collection of similar blocks. Check items 'writeEndElement', 'writeEndElement', 'writeEndDocument' in lines 546, 548, 549.

[j2doll]

Dear @ProjectMutilation Thanks for reporting. I'll register this issue. And, what is your tool?

[ProjectMutilation]

@j2doll my tool-set: cppcheck, clang-tidy and a commercial solution what I don't want to call