Created attachment 69060 [details] Python file for reproducing the crash Version: SVN (using KDE 4.8.0) OS: Linux Code folding crashes in python docstring. Reproducible: Always Steps to Reproduce: Open the attached python and enable python highlighting. 1. fold all with CTRL+SHIFT+- 2. unfold line 4 3. goto end of line 7 4. hit BACKSPACE -> crash Expected Results: It should not crash.
Thread 1 (Thread 0xb5057710 (LWP 30965)): [KCrash Handler] #7 0xb5a6e17e in malloc_consolidate () from /lib/libc.so.6 #8 0xb5a6f743 in _int_malloc () from /lib/libc.so.6 #9 0xb5a7259a in malloc () from /lib/libc.so.6 #10 0xb67dcc1d in QTextEngine::LayoutData::reallocate(int) () from /usr/lib/libQtGui.so.4 #11 0xb67e3002 in QTextEngine::attributes() const () from /usr/lib/libQtGui.so.4 #12 0xb67e9cd4 in QTextLine::layout_helper(int) () from /usr/lib/libQtGui.so.4 #13 0xb67ebec3 in QTextLine::setLineWidth(double) () from /usr/lib/libQtGui.so.4 #14 0xb24f6536 in KateRenderer::layoutLine (this=0x829dbb0, lineLayout=..., maxwidth=715, cacheLayout=true) at kate/part/render/katerenderer.cpp:896 #15 0xb24fb19a in KateLayoutCache::line (this=0x829f780, realLine=15, virtualLine=-1) at kate/part/render/katelayoutcache.cpp:318 #16 0xb24fb59f in KateLayoutCache::viewLine (this=0x829f780, realCursor=...) at kate/part/render/katelayoutcache.cpp:389 #17 0xb2554959 in KateViewInternal::viewLineOffset (this=0x82a2390, virtualCursor=..., offset=-32, keepX=false) at kate/part/view/kateviewinternal.cpp:1291 #18 0xb2550dab in KateViewInternal::maxStartPos (this=0x82a2390, changed=false) at kate/part/view/kateviewinternal.cpp:421 #19 0xb2552024 in KateViewInternal::slotRegionVisibilityChanged (this=0x82a2390) at kate/part/view/kateviewinternal.cpp:666 #20 0xb254f25b in KateViewInternal::qt_metacall (this=0x82a2390, _c=QMetaObject::InvokeMetaMethod, _id=16, _a=0xbfd592fc) at kate/build/part/kateviewinternal.moc:130 #21 0xb5fe38ad in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4 #22 0xb5ff3a0c in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 #23 0xb2440605 in KateCodeFoldingTree::regionVisibilityChanged (this=0x829a458) at kate/build/part/moc_katecodefolding.cpp:121 #24 0xb2535856 in KateCodeFoldingTree::unfoldNode (this=0x829a458, node=0x84ac828) at kate/part/syntax/katecodefolding.cpp:1408 #25 0xb2532aa2 in KateCodeFoldingTree::deleteNodeFromMap (this=0x829a458, node=0x84ac828) at kate/part/syntax/katecodefolding.cpp:600 #26 0xb2532b3f in KateCodeFoldingTree::deleteStartNode (this=0x829a458, deletedNode=0x84ac828) at kate/part/syntax/katecodefolding.cpp:626 #27 0xb25377cc in KateCodeFoldingTree::deleteNode (this=0x829a458, deletedNode=0x84ac828) at kate/part/syntax/katecodefolding.h:353 #28 0xb2536075 in KateCodeFoldingTree::updateMapping (this=0x829a458, line=13, newColumns=..., virtualNodeIndex=-1, virtualColumn=0) at kate/part/syntax/katecodefolding.cpp:1578 #29 0xb2535c9f in KateCodeFoldingTree::updateLine (this=0x829a458, line=13, regionChanges=..., updated=0xbfd59517, changed=true, colsChanged=false) at kate/part/syntax/katecodefolding.cpp:1504 #30 0xb24c9070 in KateBuffer::doHighlight (this=0x829a3d0, startLine=7, endLine=16, invalidate=false) at kate/part/document/katebuffer.cpp:706 #31 0xb24c7f30 in KateBuffer::ensureHighlighted (this=0x829a3d0, line=7) at kate/part/document/katebuffer.cpp:250 #32 0xb24b93e0 in KateDocument::kateTextLine (this=0x8299e90, i=7) at kate/part/document/katedocument.cpp:4786 #33 0xb24ff096 in KateLineLayout::textLine (this=0x84dbd10, reloadForce=true) at kate/part/render/katelinelayout.cpp:67 #34 0xb24faf7b in KateLayoutCache::line (this=0x829f780, realLine=7, virtualLine=6) at kate/part/render/katelayoutcache.cpp:298 #35 0xb2554c49 in KateViewInternal::viewLineOffset (this=0x82a2390, virtualCursor=..., offset=32, keepX=false) at kate/part/view/kateviewinternal.cpp:1327 #36 0xb2551b65 in KateViewInternal::makeVisible (this=0x82a2390, c=..., endCol=9, force=false, center=false, calledExternally=false) at kate/part/view/kateviewinternal.cpp:619 #37 0xb2557a04 in KateViewInternal::updateCursor (this=0x82a2390, newCursor=..., force=true, center=false, calledExternally=false) at kate/part/view/kateviewinternal.cpp:1844 #38 0xb25521b9 in KateViewInternal::slotRegionVisibilityChanged (this=0x82a2390) at kate/part/view/kateviewinternal.cpp:674 #39 0xb254f25b in KateViewInternal::qt_metacall (this=0x82a2390, _c=QMetaObject::InvokeMetaMethod, _id=16, _a=0xbfd59c0c) at kate/build/part/kateviewinternal.moc:130 #40 0xb5fe38ad in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4 #41 0xb5ff3a0c in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 #42 0xb2440605 in KateCodeFoldingTree::regionVisibilityChanged (this=0x829a458) at kate/build/part/moc_katecodefolding.cpp:121 #43 0xb2535856 in KateCodeFoldingTree::unfoldNode (this=0x829a458, node=0x84ac458) at kate/part/syntax/katecodefolding.cpp:1408 #44 0xb2532aa2 in KateCodeFoldingTree::deleteNodeFromMap (this=0x829a458, node=0x84ac458) at kate/part/syntax/katecodefolding.cpp:600 #45 0xb2532b3f in KateCodeFoldingTree::deleteStartNode (this=0x829a458, deletedNode=0x84ac458) at kate/part/syntax/katecodefolding.cpp:626 #46 0xb25377cc in KateCodeFoldingTree::deleteNode (this=0x829a458, deletedNode=0x84ac458) at kate/part/syntax/katecodefolding.h:353 #47 0xb2536075 in KateCodeFoldingTree::updateMapping (this=0x829a458, line=8, newColumns=..., virtualNodeIndex=-1, virtualColumn=0) at kate/part/syntax/katecodefolding.cpp:1578 #48 0xb2535c9f in KateCodeFoldingTree::updateLine (this=0x829a458, line=8, regionChanges=..., updated=0xbfd59e27, changed=true, colsChanged=false) at kate/part/syntax/katecodefolding.cpp:1504 #49 0xb24c9070 in KateBuffer::doHighlight (this=0x829a3d0, startLine=7, endLine=16, invalidate=false) at kate/part/document/katebuffer.cpp:706 #50 0xb24c7f30 in KateBuffer::ensureHighlighted (this=0x829a3d0, line=7) at kate/part/document/katebuffer.cpp:250 #51 0xb24b93e0 in KateDocument::kateTextLine (this=0x8299e90, i=7) at kate/part/document/katedocument.cpp:4786 #52 0xb24ff096 in KateLineLayout::textLine (this=0x84340d8, reloadForce=true) at kate/part/render/katelinelayout.cpp:67 #53 0xb24faf7b in KateLayoutCache::line (this=0x829f780, realLine=7, virtualLine=6) at kate/part/render/katelayoutcache.cpp:298 #54 0xb24fad46 in KateLayoutCache::updateViewCache (this=0x829f780, startPos=..., newViewLineCount=34, viewLinesScrolled=0) at kate/part/render/katelayoutcache.cpp:270 #55 0xb2558696 in KateViewInternal::tagLines (this=0x82a2390, start=..., end=..., realCursors=true) at kate/part/view/kateviewinternal.cpp:1975 #56 0xb2558462 in KateViewInternal::tagLines (this=0x82a2390, start=5, end=16, realLines=true) at kate/part/view/kateviewinternal.cpp:1945 #57 0xb25485fb in KateView::tagLines (this=0x829ef38, start=5, end=16, realLines=true) at kate/part/view/kateview.cpp:1682 #58 0xb24b248f in KateDocument::tagLines (this=0x8299e90, start=5, end=16) at kate/part/document/katedocument.cpp:3615 #59 0xb249fccc in KateDocument::qt_metacall (this=0x8299e90, _c=QMetaObject::InvokeMetaMethod, _id=51, _a=0xbfd5a3b4) at kate/build/part/katedocument.moc:350 #60 0xb5fe38ad in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4 #61 0xb5ff3a0c in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 #62 0xb24c73e3 in KateBuffer::tagLines (this=0x829a3d0, _t1=5, _t2=16) at kate/build/part/katebuffer.moc:98 #63 0xb24c91dc in KateBuffer::doHighlight (this=0x829a3d0, startLine=5, endLine=7, invalidate=true) at kate/part/document/katebuffer.cpp:736 #64 0xb24c769e in KateBuffer::editEnd (this=0x829a3d0) at kate/part/document/katebuffer.cpp:122 #65 0xb24a521e in KateDocument::editEnd (this=0x8299e90) at kate/part/document/katedocument.cpp:854 #66 0xb24a4c5f in KateDocument::removeText (this=0x8299e90, _range=..., block=false) at kate/part/document/katedocument.cpp:731 #67 0xb24ae30d in KateDocument::backspace (this=0x8299e90, view=0x829ef38, c=...) at kate/part/document/katedocument.cpp:2794 #68 0xb2552e5f in KateViewInternal::doBackspace (this=0x82a2390) at kate/part/view/kateviewinternal.cpp:799
Created attachment 69061 [details] valgrind trace
Pushed by dhaumann into branch 'master'. unit test for folding crash #294750 M +10 -0 part/tests/CMakeLists.txt A +6 -4 part/tests/bug294750.cpp A +41 -0 part/tests/bug294750.h [License: LGPL (v2+)] M +0 -1 part/tests/bug294756.cpp http://commits.kde.org/kate/7c48c089f9daf0aa784a7ec33b5d63ee2983dc2e
Git commit 7f25a94366136af22b328d3a8831431585d9f647 by Dominik Haumann. Committed on 16/03/2012 at 19:51. Pushed by dhaumann into branch 'master'. fix crash: no double deletion any more Related: bug 294756 M +34 -8 part/syntax/katecodefolding.cpp http://commits.kde.org/kate/7f25a94366136af22b328d3a8831431585d9f647
Git commit 317755347b1f93ae06eb71dae663b1b60511913a by Dominik Haumann. Committed on 16/03/2012 at 19:51. Pushed by dhaumann into branch 'KDE/4.8'. fix crash: no double deletion any more Related: bug 294756 M +34 -8 part/syntax/katecodefolding.cpp http://commits.kde.org/kate/317755347b1f93ae06eb71dae663b1b60511913a
*** Bug 281181 has been marked as a duplicate of this bug. ***
*** Bug 294666 has been marked as a duplicate of this bug. ***
*** Bug 291150 has been marked as a duplicate of this bug. ***