Some assertions from Mark.

2 files changed, 5 insertions, 0 deletions

diff --git a/src/CellBuffer.cxx b/src/CellBuffer.cxx
index 56aa15215..10e0a1859 100644
--- a/src/CellBuffer.cxx
+++ b/src/CellBuffer.cxx
@@ -751,6 +751,8 @@ bool CellBuffer::SetStyleAt(int position, char style, char mask) {
 bool CellBuffer::SetStyleFor(int position, int lengthStyle, char style, char mask) {
 	int bytePos = position * 2 + 1;
 	bool changed = false;
+	PLATFORM_ASSERT(lengthStyle == 0 ||
+		(lengthStyle > 0 && lengthStyle + position < length));
 	while (lengthStyle--) {
 		char curVal = ByteAt(bytePos);
 		if ((curVal & mask) != style) {
diff --git a/src/ScintillaBase.cxx b/src/ScintillaBase.cxx
index db8040340..707f59b9f 100644
--- a/src/ScintillaBase.cxx
+++ b/src/ScintillaBase.cxx
@@ -362,6 +362,9 @@ void ScintillaBase::Colourise(int start, int end) {
 		end = lengthDoc;
 	int len = end - start;
 
+	PLATFORM_ASSERT(len >= 0);
+	PLATFORM_ASSERT(start + len <= lengthDoc);
+
 	//WindowAccessor styler(wMain.GetID(), props);
 	DocumentAccessor styler(pdoc, props, wMain.GetID());