diff options
Diffstat (limited to 'scintilla/src/CellBuffer.cxx')
| -rw-r--r-- | scintilla/src/CellBuffer.cxx | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/scintilla/src/CellBuffer.cxx b/scintilla/src/CellBuffer.cxx index f69ab62..4203f0a 100644 --- a/scintilla/src/CellBuffer.cxx +++ b/scintilla/src/CellBuffer.cxx @@ -10,6 +10,7 @@ #include <stdio.h>
#include <stdarg.h>
+#include <stdexcept>
#include <algorithm>
#include "Platform.h"
@@ -786,6 +787,10 @@ const Action &CellBuffer::GetUndoStep() const { void CellBuffer::PerformUndoStep() {
const Action &actionStep = uh.GetUndoStep();
if (actionStep.at == insertAction) {
+ if (substance.Length() < actionStep.lenData) {
+ throw std::runtime_error(
+ "CellBuffer::PerformUndoStep: deletion must be less than document length.");
+ }
BasicDeleteChars(actionStep.position, actionStep.lenData);
} else if (actionStep.at == removeAction) {
BasicInsertString(actionStep.position, actionStep.data, actionStep.lenData);
|