View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0036260 | Lazarus | LCL | public | 2019-11-04 18:17 | 2019-11-06 21:11 |
| Reporter | sembit | Assigned To | Juha Manninen | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | assigned | Resolution | open | ||
| Product Version | Product Build | 62094 | |||
| Target Version | Fixed in Version | ||||
| Summary | 0036260: AV when deleting grid column in design. | ||||
| Description | I attach a video with a problem. | ||||
| Tags | No tags attached. | ||||
| Fixed in Revision | |||||
| LazTarget | - | ||||
| Widgetset | Win32/Win64 | ||||
| Attached Files |
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| has duplicate | 0036262 | closed | Bart Broersma | AV when deleting grid column in design. |
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bandicam 2019-11-04 20-09-37-707.mp4 (1,778,252 bytes) |
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Steps to reproduce: - Create new project - Add TDBGrid to form - Open columns editor, click "Add" to add a column - IMMEDIATELY after adding the column, click "Delete" in the column editor --> Access violation The error does NOT happen, when I - add the column - click into the form - go back to the column editor - click "delete. The error also does not happen with a TStringGrid instead of the TDBGrid. |
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Thread 1 "lazarus" received signal SIGSEGV, Segmentation fault. 0x00000000008ae8a0 in GETALIGNMENT (this=0x7fffd7b4a440) at grids.pas:12311 12311 Result := FAlignment^; (gdb) bt #0 0x00000000008ae8a0 in GETALIGNMENT (this=0x7fffd7b4a440) at grids.pas:12311 0000001 0x00000000005b6337 in GETORDPROP (INSTANCE=0x7fffd7b4a440, PROPINFO=0x1b5b6e7) at ../objpas/typinfo.pp:1814 0000002 0x0000000000a810da in GETORDVALUEAT (this=0x7fffd7480360, INDEX=0) at propedits.pp:2862 0000003 0x0000000000a81092 in GETORDVALUE (this=0x7fffd7480360) at propedits.pp:2857 0000004 0x0000000000a83829 in GETVALUE (this=0x7fffd7480360) at propedits.pp:3555 0000005 0x0000000000a81d0a in GETVISUALVALUE (this=0x7fffd7480360) at propedits.pp:3057 0000006 0x0000000000a841fd in GETVISUALVALUE (this=0x7fffd7480360) at propedits.pp:3680 0000007 0x0000000000a831db in PROPDRAWVALUE (this=0x7fffd7480360, ACANVAS=0x7fffd9c53fc0, ARECT=..., ASTATE=...) at propedits.pp:3433 0000008 0x0000000000a6cce1 in DRAWVALUE (parentfp=0x7fffffffb280, DRAWSTATE=...) at objectinspector.pp:3043 0000009 0x0000000000a6bfcb in PAINTROW (this=0x7fffd8ca8470, AROW=0) at objectinspector.pp:3121 0000010 0x0000000000a6dad8 in DOPAINT (this=0x7fffd8ca8470, PAINTONLYCHANGEDVALUES=false) at objectinspector.pp:3200 0000011 0x0000000000a6dfde in PAINT (this=0x7fffd8ca8470) at objectinspector.pp:3244 0000012 0x00000000007251be in PAINTWINDOW (this=0x7fffd8ca8470, DC=140736805677824) at include/customcontrol.inc:118 0000013 0x0000000000703cac in PAINTHANDLER (this=0x7fffd8ca8470, THEMESSAGE=...) at include/wincontrol.inc:4840 0000014 0x0000000000709efd in WMPAINT (this=0x7fffd8ca8470, MSG=...) at include/wincontrol.inc:6828 0000015 0x0000000000725096 in WMPAINT (this=0x7fffd8ca8470, MESSAGE=...) at include/customcontrol.inc:98 0000016 0x000000000043d558 in DISPATCH (this=0x7fffd8ca8470, MESSAGE=) at ../inc/objpas.inc:684 0000017 0x0000000000717b00 in WNDPROC (this=0x7fffd8ca8470, THEMESSAGE=...) at include/control.inc:2237 0000018 0x0000000000705b6d in WNDPROC (this=0x7fffd8ca8470, MESSAGE=...) at include/wincontrol.inc:5412 0000019 0x00000000007e2f35 in SLOTPAINT (this=0x7fffdaaec7d0, SENDER=0x2d97c20, EVENT=0x7fffffffbf60) at qt5/qtwidgets.pas:4202 0000020 0x00000000007df134 in EVENTFILTER (this=0x7fffdaaec7d0, SENDER=0x2d97c20, EVENT=0x7fffffffbf60) at qt5/qtwidgets.pas:2699 ... All calls below were inside QT5 widgetset and not relevant here. The relevant calls are in ObjectInspector and PropEdits, and the last one in function TGridColumn.GetAlignment. Apparently the column count is then 0. Why is the method called for DBGrid but not for StringGrid? Requires some pondering and head scratching. |
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Another observation: Add two columns. Then click the "Delete" button --> nothing happens, no problem |
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This problem comes with revision 57050. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2019-11-04 18:17 | sembit | New Issue | |
| 2019-11-04 18:17 | sembit | File Added: bandicam 2019-11-04 20-09-37-707.mp4 | |
| 2019-11-04 21:22 | Bart Broersma | Relationship added | has duplicate 0036262 |
| 2019-11-04 23:10 | wp | Status | new => confirmed |
| 2019-11-04 23:10 | wp | LazTarget | => - |
| 2019-11-04 23:10 | wp | Note Added: 0119061 | |
| 2019-11-05 13:48 | Juha Manninen | Note Added: 0119073 | |
| 2019-11-05 16:46 | wp | Note Edited: 0119061 | View Revisions |
| 2019-11-05 16:52 | wp | Note Added: 0119076 | |
| 2019-11-06 21:11 | Michl | Note Added: 0119111 | |
| 2019-11-06 21:11 | Michl | Assigned To | => Juha Manninen |
| 2019-11-06 21:11 | Michl | Status | confirmed => assigned |
