Details
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Bug
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Resolution: Fixed
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Not Evaluated
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None
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Qt Creator 9.0.0
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None
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Linux/Wayland
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b6bd59fc5 (master)
Description
I use multi line editor function by shortcut "Alt+Shift", qtcreator started becoming unresponsive after I deleted two character. The CPU usage of qtcreator process is 98%, The following is gdb call stack:
Thread 1 "qtcreator" received signal SIGINT, Interrupt.
0x00007f72c8490eb5 in ?? () from /usr/lib/qtcreator/plugins/libCppEditor.so
(gdb) bt
#0 0x00007f72c8490eb5 in () at /usr/lib/qtcreator/plugins/libCppEditor.so
#1 0x00007f72c8472f30 in CppEditor::SemanticHighlighter::onHighlighterResultAvailable(int, int) () at /usr/lib/qtcreator/plugins/libCppEditor.so
#2 0x00007f72fa9802e3 in () at /usr/lib/libQt6Core.so.6
#3 0x00007f72faa8e9fd in QFutureWatcherBase::resultsReadyAt(int, int) () at /usr/lib/libQt6Core.so.6
#4 0x00007f72faa8ec4e in QFutureWatcherBase::event(QEvent*) () at /usr/lib/libQt6Core.so.6
#5 0x00007f72fb975adc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#6 0x00007f72fa92a118 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#7 0x00007f72fa92a2eb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt6Core.so.6
#8 0x00007f72fab4f528 in () at /usr/lib/libQt6Core.so.6
#9 0x00007f72f971687b in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#10 0x00007f72f976d279 in () at /usr/lib/libglib-2.0.so.0
#11 0x00007f72f9715132 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#12 0x00007f72fab4d562 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#13 0x00007f72fa9354c4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#14 0x00007f72fa92cd3b in QCoreApplication::exec() () at /usr/lib/libQt6Core.so.6
#15 0x000055a801453d9b in ()
#16 0x00007f72fa23c290 in () at /usr/lib/libc.so.6
#17 0x00007f72fa23c34a in __libc_start_main () at /usr/lib/libc.so.6
#18 0x000055a801454ca5 in ()
According to my analysis, I think the following code is stuck in an infinite loop:
for (QTextBlock block = firstBlockForResult; block != endBlock; block = block.next()) { Parentheses syntacticParens = getClearedParentheses(block); // Remove mis-detected parentheses inserted by syntactic highlighter. // This typically happens with raw string literals. if (result.textStyles.mainStyle != C_PUNCTUATION) { for (auto it = syntacticParens.begin(); it != syntacticParens.end();) { const int absParenPos = block.position() + it->pos; if (absParenPos >= startRange && absParenPos < endRange) it = syntacticParens.erase(it); else ++it; } } TextDocumentLayout::setParentheses(block, syntacticParens); }
The following code is the operator target of multi line edit:
The "|" symbol is I begin edit position, but I can't recurrence the bug.
struct wl_signal |motion;
struct wl_signal |motion_absolute;
struct wl_signal |button;
struct wl_signal |axis;
struct wl_signal |frame;
struct wl_signal |swipe_begin;
struct wl_signal |swipe_update;
struct wl_signal |swipe_end;
struct wl_signal |pinch_begin;
struct wl_signal |pinch_update;
struct wl_signal |pinch_end;
struct wl_signal |hold_begin;
struct wl_signal |hold_end;
struct wl_signal |touch_up;
struct wl_signal |touch_down;
struct wl_signal |touch_motion;
struct wl_signal |touch_cancel;
struct wl_signal |touch_frame;
struct wl_signal |tablet_tool_axis;
struct wl_signal |tablet_tool_proximity;
struct wl_signal |tablet_tool_tip;
struct wl_signal |tablet_tool_button;
Attachments
Issue Links
- is duplicated by
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- Closed
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| For Gerrit Dashboard: QTCREATORBUG-28507 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 452749,2 | CppEditor: Add soft assert for unexpected semantic highlighter state | master | qt-creator/qt-creator | Status: MERGED | +2 | 0 |