Sorry I can’t provide much more, other than this seems to be specific to Python, and has happened on all Python source files I try to reformat.
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007fa14d65b859 in __GI_abort () at abort.c:79
#2 0x00007fa14d6c626e in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fa14d7f0298 "%s\n")
at ../sysdeps/posix/libc_fatal.c:155
#3 0x00007fa14d6ce2fc in malloc_printerr (str=str@entry=0x7fa14d7f2a50 "malloc(): invalid size (unsorted)") at malloc.c:5347
#4 0x00007fa14d6d10b4 in _int_malloc (av=av@entry=0x7fa14d825b80 <main_arena>, bytes=bytes@entry=24) at malloc.c:3736
#5 0x00007fa14d6d3299 in __GI___libc_malloc (bytes=24) at malloc.c:3066
#6 0x0000000002635688 in operator new(unsigned long) ()
#7 0x00007fa14ccb88aa in ?? () from /opt/slickedit-pro2023/bin/libQt5XcbQpa.so.5
#8 0x00007fa14ccb8dbc in ?? () from /opt/slickedit-pro2023/bin/libQt5XcbQpa.so.5
#9 0x00007fa14ccb946d in ?? () from /opt/slickedit-pro2023/bin/libQt5XcbQpa.so.5
#10 0x00007fa15951bbef in QRasterPaintEngine::drawCachedGlyphs(int, unsigned int const*, QFixedPoint const*, QFontEngine*) ()
from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#11 0x00007fa15951dced in QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) ()
from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#12 0x00007fa1595048dd in ?? () from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#13 0x00007fa15950523c in QPainter::drawText(QPointF const&, QString const&, int, int) ()
from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#14 0x0000000000a705b0 in seLineLayout::drawLine(QPainter&, crt2_t*, int, int, QRect const&, cmArray<seLineLayout::WidthToCursor>*, cmArray<seLineLayout::WidthToCursor>*) ()
#15 0x0000000000b0a97e in show_line(crt2_t*, int, QPainter*, int&, int&) ()
#16 0x0000000000b0c63a in crt2_refresh(crt2_t*, QPainter*, QRect*, bool, bool, bool) [clone .constprop.222] ()
#17 0x000000000096f8db in vsCtlEditorView::paint(QPaintEvent*) ()
#18 0x000000000096fa9d in vsCtlEditorView::paintEvent(QPaintEvent*) ()
#19 0x00007fa158bd1779 in QWidget::event(QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#20 0x00007fa158be872e in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#21 0x00007fa158bf2570 in QApplication::notify(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#22 0x00007fa158f36629 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#23 0x00007fa158bc5690 in QWidgetPrivate::sendPaintEvent(QRegion const&) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#24 0x00007fa158bce60c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#25 0x00007fa158be991b in ?? () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#26 0x00007fa158bd0a08 in QWidgetPrivate::syncBackingStore() () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#27 0x00007fa158bd0e58 in QWidget::event(QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
--Type <RET> for more, q to quit, c to continue without paging--
#28 0x0000000000585f95 in vsCtlMainMdi::event(QEvent*) ()
#29 0x00007fa158be872e in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#30 0x00007fa158bf2570 in QApplication::notify(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#31 0x00007fa158f36629 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#32 0x00007fa158f367c1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#33 0x00007fa158ef0d23 in ?? () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#34 0x00007fa14d55a17d in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fa14d55a400 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fa14d55a4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fa158eeb6b4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#38 0x00007fa158f34e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#39 0x00007fa158f36ddc in QCoreApplication::exec() () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#40 0x00000000005a2e6a in vmain(int, char**) ()
#41 0x0000000001fb9da9 in xmain ()
#42 0x00000000005e2be9 in main ()
(gdb)
and in another run:(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007fe2eff3b859 in __GI_abort () at abort.c:79
#2 0x00007fe2effa626e in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fe2f00d0298 "%s\n")
at ../sysdeps/posix/libc_fatal.c:155
#3 0x00007fe2effae2fc in malloc_printerr (str=str@entry=0x7fe2f00d2a50 "malloc(): invalid size (unsorted)") at malloc.c:5347
#4 0x00007fe2effb10b4 in _int_malloc (av=av@entry=0x7fe2f0105b80 <main_arena>, bytes=bytes@entry=288) at malloc.c:3736
#5 0x00007fe2effb4b95 in __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3428
#6 0x00007fe2fbf7cdec in QTextEngine::shapeTextWithHarfbuzzNG(QScriptItem const&, unsigned short const*, int, QFontEngine*, QVector<unsigned int> const&, bool, bool) const () from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#7 0x00007fe2fbf85acf in QTextEngine::shapeText(int) const () from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#8 0x00007fe2fbf6b37e in QTextEngine::shape(int) const () from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#9 0x00007fe2fbf7e5ba in QTextEngine::shapeLine(QScriptLine const&) () from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#10 0x00007fe2fbde4efd in QPainter::drawText(QPointF const&, QString const&, int, int) ()
from /opt/slickedit-pro2023/bin/libQt5Gui.so.5
#11 0x0000000000a705b0 in seLineLayout::drawLine(QPainter&, crt2_t*, int, int, QRect const&, cmArray<seLineLayout::WidthToCursor>*, cmArray<seLineLayout::WidthToCursor>*) ()
#12 0x0000000000b0a97e in show_line(crt2_t*, int, QPainter*, int&, int&) ()
#13 0x0000000000b0c63a in crt2_refresh(crt2_t*, QPainter*, QRect*, bool, bool, bool) [clone .constprop.222] ()
#14 0x000000000096f8db in vsCtlEditorView::paint(QPaintEvent*) ()
#15 0x000000000096fa9d in vsCtlEditorView::paintEvent(QPaintEvent*) ()
#16 0x00007fe2fb4b1779 in QWidget::event(QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#17 0x00007fe2fb4c872e in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#18 0x00007fe2fb4d2570 in QApplication::notify(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#19 0x00007fe2fb816629 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#20 0x00007fe2fb4a5690 in QWidgetPrivate::sendPaintEvent(QRegion const&) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#21 0x00007fe2fb4ae60c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#22 0x00007fe2fb4c991b in ?? () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#23 0x00007fe2fb4b0a08 in QWidgetPrivate::syncBackingStore() () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#24 0x00007fe2fb4b0e58 in QWidget::event(QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#25 0x0000000000585f95 in vsCtlMainMdi::event(QEvent*) ()
#26 0x00007fe2fb4c872e in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#27 0x00007fe2fb4d2570 in QApplication::notify(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Widgets.so.5
#28 0x00007fe2fb816629 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#29 0x00007fe2fb8167c1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#30 0x00007fe2fb7d0d23 in ?? () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#31 0x00007fe2efe3a17d in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fe2efe3a400 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fe2efe3a4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fe2fb7cb6b4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#35 0x00007fe2fb814e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#36 0x00007fe2fb816ddc in QCoreApplication::exec() () from /opt/slickedit-pro2023/bin/libQt5Core.so.5
#37 0x00000000005a2e6a in vmain(int, char**) ()
#38 0x0000000001fb9da9 in xmain ()
#39 0x00000000005e2be9 in main ()
(gdb)
Here is the redacted text sent to the build window:VSLICKERRORPATH=/home/XXXXXXXXXXXXXXXXXX
dm --volume=$HOME/dev/XXXXXXXXXXXXXX lint XXXXXXXXXX_lint.py -f util/.../test_XXXXXXXXXXXXXXXXXXXX.py
Creating docker_lint_run ...
[1A[2K
Creating docker_lint_run ... [32mdone[0m
[1Bvsbuild_done