Am Montag, dem 01.11.2021 um 14:15 +0100 schrieb Pavel Sanda: > Looking at the backtrace and commit it seems that > + TocItem const & item = > + gui_view_.tocModels().currentItem(current_type_, > index); > triggers the crash. > > Juergen, can you reproduce?
Yes. I am not sure what goes on here exactly, but the toc seems empty after the window switch. I don't think the code above is to blame, it just reveals the problem. The attached patch prevents the crash, but I am not sure whether it doesn't hide the actual problem. Do we need to update the respective toc somewhere? But where? Jürgen
diff --git a/src/frontends/qt/TocModel.cpp b/src/frontends/qt/TocModel.cpp
index 16990b8359..c0c3dce548 100644
--- a/src/frontends/qt/TocModel.cpp
+++ b/src/frontends/qt/TocModel.cpp
@@ -327,6 +327,11 @@ TocItem const TocModels::currentItem(QString const & type,
}
LASSERT(index.model() == it.value()->model(), return TocItem());
+ if (it.value()->empty()) {
+ LYXERR(Debug::GUI, "TocModels::currentItem(): requested toc is empty!");
+ return TocItem();
+ }
+
return it.value()->tocItem(index);
}
diff --git a/src/frontends/qt/TocModel.h b/src/frontends/qt/TocModel.h
index 55507a0a92..ee447616d0 100644
--- a/src/frontends/qt/TocModel.h
+++ b/src/frontends/qt/TocModel.h
@@ -47,6 +47,8 @@ public:
///
void clear();
///
+ bool empty() { return toc_->empty(); }
+ ///
QAbstractItemModel * model();
///
QAbstractItemModel const * model() const;
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