View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001314 | Double Commander | Plugins | public | 2016-03-14 13:07 | 2020-06-19 21:52 |
| Reporter | jakubklos | Assigned To | Alexx2000 | ||
| Priority | normal | Severity | major | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Projection | none | ETA | none | ||
| Platform | Linux | OS | Ubuntu | OS Version | 14.04 |
| Product Version | 0.7.0 | ||||
| Target Version | 0.7.2 | Fixed in Version | 0.7.2 | ||
| Summary | 0001314: Plugin including the Interfaces unit crashes DC when unloading the module | ||||
| Description | Creating a wfx plugin with Forms (and the Interfaces unit) crashes when DC unloads the module. This is especially critical when adding a new module and results in not being able to add any such module. See the crash log PollThread: Interrupted system call Dialog executed TWFXmodule created WFX module loaded /home/jakub/Downloads/xadb.wfx at 00000000041CA2A0 WFXModule Loaded WFX Module Unloaded WFX sPluginName=ADB=/home/jakub/Downloads/xadb.wfx WFX Item Added WFX Freed TApplication.HandleException Access violation Stack trace: $00007F6105837C00 in [FORMS.PP] ExceptionOccurred Sender=EAccessViolation Exception=Access violation Stack trace: $00007F6105837C00 in TApplication.HandleException: there was another exception during showing the first exception Stack trace: $00007F6105837C00 in Destroying main form Drive watcher finished Waiting for workers thread 00000000039E5D98 Finalized workers thread 00000000039E5D98 Waiting for FileSystemWatcher thread Waiting for workers thread 00000000039E6CB8 Finalized workers thread 00000000039E6CB8 Destroying TFileSystemFileSource when refcount=0 Main form destroyed Finishing GuiMessageQueue PollThread: RemovePoll 20 PollThread: Finish polling Shutting down PixmapManager | ||||
| Steps To Reproduce | Very simple in fact. Create a new library in Lazaraus: library test; uses Interfaces, Forms; end. DC correctly reports it is not a WFX module but then crashes. The crash occurs for a real WFX or any SO that uses the Interfaces unit. I have tried both Qt and gtk2 but it seems not to be related. | ||||
| Tags | No tags attached. | ||||
| Fixed in Revision | 6710,6817 | ||||
| Operating system | Linux | ||||
| Widgetset | GTK2, QT4 | ||||
| Architecture | 64-bit | ||||
|
|
I don't sure that it is DC problem. Lazarus has many problems when use LCL in DLL, see http://bugs.freepascal.org/view.php?id=7182 and related bug reports. For simple GUI in wfx plugin you can use DialogAPI instead. See ftp and samba plugins as examples. |
|
|
Ok, thank you for explaining. DialogAPI seems to be reasonable. Still I would like to find a workaround. LCL works fine in the plugin, it is just the initial checking. If I add it manually in the doublecmd.xml it all works including the dialogs. Would it be too bold to ask modules not to be unloaded maybe? That would solve it. Any other idea? Thank you again |
|
|
I don't see another way. I will do it. |
|
|
Thank you |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2016-03-14 13:07 | jakubklos | New Issue | |
| 2016-03-14 16:55 | Alexx2000 | Note Added: 0001677 | |
| 2016-03-14 16:55 | Alexx2000 | Status | new => feedback |
| 2016-03-15 10:28 | jakubklos | Note Added: 0001679 | |
| 2016-03-15 10:28 | jakubklos | Status | feedback => new |
| 2016-03-17 23:15 | Alexx2000 | Assigned To | => Alexx2000 |
| 2016-03-17 23:15 | Alexx2000 | Status | new => assigned |
| 2016-03-17 23:16 | Alexx2000 | Note Added: 0001684 | |
| 2016-03-18 10:24 | jakubklos | Note Added: 0001685 | |
| 2016-03-19 11:58 | Alexx2000 | Fixed in Revision | => 6710 |
| 2016-03-19 11:58 | Alexx2000 | Status | assigned => resolved |
| 2016-03-19 11:58 | Alexx2000 | Resolution | open => fixed |
| 2016-03-27 17:19 | Alexx2000 | Target Version | => 0.7.2 |
| 2016-04-29 10:14 | Alexx2000 | Fixed in Revision | 6710 => 6710,6817 |
| 2016-04-29 10:14 | Alexx2000 | Fixed in Version | => 0.7.2 |
| 2020-06-19 21:52 | Alexx2000 | Status | resolved => closed |
