Hi,

I have a nice minimally reproducible bug on QCAD v3.7.4 on Mac OS X 10.9.5 (Mavericks).
QCAD will segfault whenever I take the following steps:

1. Open a new document
2. Create a leader object (D,E) in the default ‘0’ layer. Leave its style and color defined by the layer, as per default.
3. Create a new layer, with a non-default line style or color. The line weight & layer name do not matter.
4. Select the leader object previously create
5. Open the property editor and assign the object to the new layer just created.
Every time, this will cause QCAD to segfault on my machine. The crash report is attached.

Another minimally reproducible path to the same error is to do the following:
1. Open a new document
2. Create a leader object (D,E) in the default ‘0’ layer. Give it a custom color and line style that over-ride the layer defaults.
3. Create a new layer, with a non-default line style or color. The line weight & layer name do not matter.
4. Select the leader object previously created.
5. Open the property editor and assign the object to the new layer just created.
6. Still in the property editor, switch the leader object’s color back to ‘By Layer’.
The same segfault will occur.

It seems that the crash is triggered by the action of changing a leader object’s color (and/or line style) in a manner that requires the object to check the containing layer’s default color and style. You can achieve this by either changing the object’s layer, or switching the color and style from being custom defined to ‘by layer’, as long as the selection requires the line’s appearance to change.

Any thoughts? My machine’s crash report is attached.

Dan

Steps to reproduce:

1. Create new drawing and fill it with some contents that’s easy to distinguish, for example text “DRAWING 1”.
2. Save it as dr1.dxf
3. Close it
4. Open dr1.dxf
5. Edit it, for example change text from “DRAWING 1” to “DRAWING 2” 6. Save changed file as dr2.dxf
7. Close it
8. Open dr1.dxf (it should have content “DRAWING 1”)
9. Open dr2.dxf (it should have content “DRAWING 2”)
10. Close tab dr1.dxf
10.1 Qcad will ask you to save changes.
10.2 Press “Yes” –> nothing happens, dialog doesn’t disappear.
10.3 Press “Discard” –> dialog disappears, tab gets closed
10.4 Tab that has content of file dr2.dxf (”DRAWING 2”) remains open but gets title “dr1.dxf” (!)
11. Close tab
12. Press “Yes” in dialog that asks to save changes

Results:
1. Open dr1.dxf
2. Open dr2.dxf
As you can see, both files have equal contents (”DRAWING 2”)

Expected results:

1. Files have their own contents.
2. Dialogs asking to save files disappear when checking “Yes”, “Cancel” or “Discard” 3. Tabs don’t change titles and associated file names when other tabs are closed.

Just installed (31 jan 2015) on Win 7 64 bit. Two bugs are immediately apparent...

 bug 1 : Network drives are not listed in the file open or import dialogs - no way to access files stored on networked drives. (This is not a windows configuration error- all my other apps work perfevtly ok.)

 bug 2 : After about 5 minutes of initial exploration immediately after installation a window pops up... Trial Expired: The trial add-on CAM is no longer active (restart required).

Note: I do have neither of these problems on Windows XP (32 bit) which I installed yesterday

- Select line
- Modify > Explode

After the first time I have saved a file from QCAD to the USB stick, the USB stick becomes read only.

Highly inconvenient as one then needs to copy over the data and format it again.

- Create new empty drawing
- Make layer 0 invisible or lock it
- Dimension > Leader
- Set start point

Create spline through point P.
Create zero length line at P.
Snap to P → crash.

When scrolling quickly, the entire canvas flashes white (some kind of video buffer issue?). This includes the rulers, but excludes the scroll bars and the corner fillet at the top-left between the two rulers. Frequency of flicker is linked to speed too - the more you scroll the fast the flicker.

I’ve marked the severity high - obviously this is not a functional problem, but the strobe effect is causing headaches and may have negative affects for people with illnesses triggered by flashing light. Even with the background set to white, the flashing is still severe - when the background is set to black, it’s unbearable.

Using a Mac Pro (10.10.3) with AMD FirePro D300 2048 MB graphics and dual displays. Happens on either of the displays. Was using an August 2013 build with the issue - just upgraded to latest build and have same issue. Didn’t experience this on previous/older Mac Pro (running 10.8), so suspect it’s an issue with hardware or OS version?

Missing file Qt5XmlPatterns.dll in Windows 64bit release.

I just installed 3.12.5.0 (3.12.5) on a Dell Latitude E7250 (8GB RAM, i7-56000 CPU, 2.6GHz, Win 7 Pro 64 bit OS).

Started working my way through the user manual, tried to save a new file as ‘example’ and QCAD (64 bit Pro) crashed. Tried a few times with Save and Save As, empty files and a simple rectangle and it crashed every time.

Removed and re-installed the 64 bit version - same problem

Downloaded, installed 32 bit version as work around - works fine

Opens an Autocad .dwg file happily (Pro version x64). Allows you to make changes, when you go to save (or save as), you get the “Invalid symbol table name”.

It should figure this out when file is opened and squawk immediately.

Would be extremely useful to get some additional error details that might allow one to diagnose and fix the problem. i.e. “Invalid symbol table name: _” with the name of the offender.

I tried removing unused blocks, no joy.

When trying to select the innermost square (created as a polygon) - Qcad immediately crashes.

Selection can be either a box select or by clicking on the polygon.

This happened with the latest (3v15.5.0) QCAD/CAM Pro on Linux
I have not attempted to verify problem on windows.

QCAD crashes when you perform the following operations:

1. Create Polyline with just one segment.  
2. Delete the node with DELETE NODE(S) command.  
3. Press ESC several times.
(-> QCAD crashes..)

The main menu bar does not allow any selections, there is not even an underscored shortcut character shown.

2016 I Mac running Mac OS X Sierra Ver 10.12.5
Program crashes when I use the “Check for QCad Pro updates” in the “Help” menu
Therefor I cannot update to latest version

QCAD Data
Version:
3.16.5.0 (3.16.5)
Internet:
QCAD.org
Build Date:
Feb 6 2017
Revision:
62420f4
Qt Version:
5.8.0
Architecture:
x86_64
Compiler:
Clang 8.0.0

Affects 32bit Linux when compiled against Qt4 (legacy platform release).

(Re-)combining polys touching at node with ‘create from selected’ leads to application crash.

QCAD 3.20.1 Win7 32bit

In the file example 2.
Regards

Depolyment issue with qcaddwg plugin.

Importing or pasting a drawing which references a non-existing image crashes.

RGraphicsSceneDrawable or type image references deleted, temporary preview document through RImageData which leads to crash when trying to load the image.

Exception due to invalid include path.

QCAD 3.21.2 x86_64 Linux crashes if I try to select any entity of the attached file. The qt4 legacy version is working fine.

Hi Andrew,

I am trying to ‘HP pen plotter’ a test file, created by AutoCAD 10.

Saving the in QCAD loaded file goes fine. However, the tool table is empty now.

Trying to make a new tool 1 Errors it exists already but does not show up in the tool table.

What do I miss?

Import of a block from a file from file - import or its related icon does not place anything on the drawing or add it to the block list.
When you open the command, the import drawing dialog appears as well as the options tool bar. Whether save as block is checked or not, nothing happens and the options tool bar closes when a file name has been selected and open is clicked on the import drawing dialog.

Dragging and dropping a file on the main screen still works

QCAD Professional
Win7 winInstaller 32bit
Version: 3.25.2.7 (3.25.2.7)
Internet: QCAD.org
Build Date: Dec 16 2020
Revision: e06f230
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Include file was open when using ‘Edit Block In-place (BB)’ in an other drawing.
Happend on 5/1/2021 just before 2:56 am
https://qcad.org/rsforum/viewtopic.php?&t=7945#p31055

‘Edit Block In-place (BB)’ is never used in this drawing.
There was never a Block in this file.
I might have switched focus.

Re-installed QCAD a dozen times meanwhile.
Wiped all what remained of QCAD twice.
Cleaned up the windows registry twice.
Lastly left out all kinds of my custom scripts.
Simply a bare install with the msi file.

How to replicate:
- Start QCAD in normal mode
- Load included file
- Set App.Prefs .. Startup .. Restore open files
- Close QCAD
- Start QCAD in debugger mode
(-rescan -enable-script-debugger -always-load-scripts)

Boot fails.
Every successive trial.

When booting in normal mode I see the BB options toolbar blink shortly.

3 Screengrabs in DebuggerModeError.zip in the same topic.
The blink I can’t catch.

I can Boot with no file to retore on open in debugger mode and load the file.
I have several of those files, all were open that day at 2:56 am

CVH

Recursion in move, rotate, mirror, stretch of viewport entity.

If I draw a ‘control points’ spline, it draws fine. If I draw (or open a file with...) ‘fit points’ spline, then that spline type wont’ display. (see attached video)

* If I ‘select all’, then the fit points will display/highlight; however, the spline itself does not display.

when changing the window focus, the paper in the print preview disappears and doesn’t come back anymore

Move cursor near spline, e.g. when drawing line with auto snap active.

Custom text height cannot be set (enter closes the dialog, tab does not activate the entered text height)

Open

Postponed

Done

Changing the unit of a drawing can make QCAD hangs

• Mile: QCAD hangs in endless loop
• Nanometer, Microinch: view turns white, at some levels of zoom, it turns gray
• Foot, Yard: GraphicsView grid too small meshed

Autosave

Make interval configurable
Enable / disable
Path (?)

• draw → line → snap coordinate
• draw → line → snap polar coordinate

'setButton'"Set"

problem: the option tool bar isn’t show at all

• a script would be great actually. then we can generate different drawings with different units / scales / paper settings
• OdWriteEx from OpenDesign creates something similar: a bunch of rectangles, each with a text label and an entity inside, e.g. “Aligned Dimension” and below a rectangle with an aligned dimension inside

• the example drawings should contain:
  • an instance of every supported entity type (line, arc, circle, all dimensions, block insert, text, hatch, solid fill, ...)
  • lines in all available widths
  • lines in all available types
  • lines in all available (fixed) colors and some custom colors

• script should be able to generate example drawings for different:
  • units
  • drawing scales
  • paper sizes
  • paper settings (background color, multi page settings, etc.)

1. new file
2. draw spline CP, 2deg, closed
3. save → crash

Debug:    "RDwgServices::printErrorStackTrace: General modeling failure" 
Warning:  RDwgExporter::exportEntity: Exception occured. Entity NOT saved: 
 RSplineEntity(REntity(RObject(id: 23, document: "0xb246720", address: "0xb915f00", undone: 0), type: 23, layerId: 21, blockId: 22, lineweight: -1, linetypeId: 0, color: RColor(ByLayer) , drawOrder:  0 , selectionStatus:  false ) 
controlPoints (6): 0: RVector(14, 21, 0) 1: RVector(41, 25, 0) 2: RVector(41, 9, 0) 3: RVector(28, 4, 0) 4: RVector(14, 21, 0) 5: RVector(41, 25, 0) 
fitPoints (0): 
knots (7): 0: -1, 1: 0, 2: 1, 3: 2, 4: 3, 5: 4, 6: 5, )
Fatal:    ASSERT: "false" in file RDwgExporter.cpp, line 1234

Thread [1] 2066 (Suspended : Signal : SIGABRT:Aborted)	
	__kernel_vsyscall() at 0xffffe424	
	raise() at 0xb4f037ff	
	abort() at 0xb4f05140	
	RMainWindow::messageHandler() at RMainWindow.cpp:63 0x8e025a6	
	qt_message_output() at 0xb5357f65	
	0xb53581ab	
	qFatal() at 0xb53582c9	
	qt_assert() at 0xb5358355	
	RDwgExporter::exportEntity() at RDwgExporter.cpp:1,234 0x8cb754f	
	RExporter::exportEntities() at RExporter.cpp:408 0x8de5c96	
	<...more frames...>	

• File “ExampleDrawings/data/dim_aligned.dwg”:
  • upper limit: 0.01, lower limit 0.02 → correctly shown
• choose “Generate Example Drawings” → the element “aligned dimension” (with limits set) shows 0.010.01 now, since both label and tolerance limits are set (according to the property editor):
  • label: <>\S0.01^0.02;
  • upper limit: 0.01
• same for lower limit
• “Generate Example Drawings” inserts the drawings as blocks

cannot hatch single full ellipse

1. open the attached drawing
2. select the polyline
3. fill it with hatch pattern “stars” → looks ok, the whole area is filled
4. save the file
5. re-open it
6. there is a gap in the filling now, see attached screen shot

1. new file
2. insert (drag-n-drop or insert button) from library browser → segfault

Thread [1] 12403 (Suspended : Signal : SIGSEGV:Segmentation fault)	
	RObject::getId() at RObject.h:92 0x8a11c82	
	RClipboardOperation::copy() at RClipboardOperation.cpp:66 0x8d4892a	
	RPasteOperation::apply() at RPasteOperation.cpp:30 0x8d4841a	
	RDocumentInterface::previewOperation() at RDocumentInterface.cpp:1,766 0x8de19bb	
	REcmaDocumentInterface::previewOperation() at REcmaDocumentInterface.cpp:4,711 0x889aaad	
	0xb6bd813c	
	0xb6ac1f68	
	0xb6a9164c	
	0xa83ced9f	
	0xb6a423e3	
	<...more frames...>	

occurs sporadically, often when the application or a MDI child is closed, usually not reproducible.

• 2011-05-11 15.19:32 unsaved drawing, after choosing “no” at the confirmation dialog

Uncaught exception at /home/martin/workspace/rsframework/scripts/Tools/PainterPathViewer/../../library.js:50:
Error: cannot access member `isNull' of deleted QObject
50	            (typeof(obj.isNull)=="function" && obj.isNull()===true));

Printing segfaults under Linux after the printer dialog is shown.

Advanced selection dialog hits a debugger statement on line 1088.

1. Selection- Advanced Selection
2. Change first combo box to “Any”

the buttons works, but are not toggled (”restriction off” is always pushed)

RPainterPath.h

    inline bool isEmpty() const;

g++ -rdynamic -Wl,-rpath,/home/martin/opt/QtSDK/Desktop/Qt/473/gcc/lib
-o ../../debug/qcad-bin debug/main.o
   -L/home/martin/opt/QtSDK/Desktop/Qt/473/gcc/lib
-L/usr/X11R6/lib -L/home/martin/workspace/rsframework/debug
-L/home/martin/workspace/rsframework/debug/opendesign
 -lecma -lecmaapi -ldwg -lpluginsqt -lgui -lentity -loperations -lspatialindexnavel
 -lgrid -lsnap -lcore -lstemmer -lmath -lrxslt -lrxml -ldxf -lModelerGeometry
 -lTD_BrepRenderer -lTD_Br -lTD_AcisBuilder -lTD_Db -lTD_DbRoot -lTD_Gs
 -lTD_SpatialIndex -lTD_Gi -lTD_Ge -lTD_Root -lFreeType -lTD_Alloc -lRecomputeDimBlock
 -lExFieldEvaluator -lQtWebKit -lQtScript -lQtScriptTools -lQtSvg -lQtSql -lQtXmlPatterns
 -lQtXml -lQtOpenGL -lQtGui -lQtNetwork -lQtCore -lGLU -lGL -lpthread 
/home/martin/workspace/rsframework/debug/libecmaapi.a(REcmaPainterPath.o): In function `REcmaPainterPath::isEmpty(QScriptContext*, QScriptEngine*)':
/home/martin/workspace/rsframework/src/scripting/ecmaapi/REcmaPainterPath.cpp:2078: undefined reference to `RPainterPath::isEmpty() const'
/home/martin/workspace/rsframework/debug/libgui.a(RGraphicsSceneQt.o): In function `RGraphicsSceneQt::endPath()':
/home/martin/workspace/rsframework/src/gui/RGraphicsSceneQt.cpp:71: undefined reference to `RPainterPath::isEmpty() const'
/home/martin/workspace/rsframework/src/gui/RGraphicsSceneQt.cpp:74: undefined reference to `RPainterPath::isEmpty() const'
/home/martin/workspace/rsframework/debug/libentity.a(RHatchData.o): In function `RHatchData::getBoundingBox() const':
/home/martin/workspace/rsframework/src/entity/RHatchData.cpp:104: undefined reference to `RPainterPath::isEmpty() const'
/home/martin/workspace/rsframework/debug/libentity.a(RHatchData.o): In function `RHatchData::getDistanceTo(RVector const&, bool, double, bool) const':
/home/martin/workspace/rsframework/src/entity/RHatchData.cpp:127: undefined reference to `RPainterPath::isEmpty() const'
/home/martin/workspace/rsframework/debug/libentity.a(RHatchData.o):/home/martin/workspace/rsframework/src/entity/RHatchData.cpp:134: more undefined references to `RPainterPath::isEmpty() const' follow
collect2: ld returned 1 exit status

temporary solution: changed method to non-line

'shape.approximateWithLines'"0xc436c88"

1. draw line
2. Modify → Rotate
   • center point: line end point
   • delete original
   • angle 90°

Uncaught exception at scripts/Modify/Rotate/Rotate.js:117: Error: :-1:-1: Wrong number/types of arguments
for RDocumentInterface.applyOperation().
<native>(undefined) at -1
<anonymous>(event = RCoordinateEvent(0xbfffd478), preview = false) at scripts/Modify/Rotate/Rotate.js:117
<anonymous>(event = RCoordinateEvent(0xbfffd478)) at
/home/martin/workspace/rsframework/scripts/Modify/../EAction.js:1197
<global>() at -1
117	                di.applyOperation(this.getOperation(false));

• see attached drawing

• see attachment
• factor x/y: 0.5
• green: original entities
• red: properly scaled entities

• see attachment

implement