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Fix potential crash when crossing the 2GB file size threshold 

To be able to work with 2GB+ files, we have to use the Scintilla SC_DOCUMENTOPTION_TEXT_LARGE flag.

Until now, this flag was only used if a file > 2GB was to be loaded. For files smaller than 2GB or newly created empty ones, it was not used. This left the room for a Notepad++ crash situation because of the user has been left the possibility to cross this threshold (e.g. by pasting a data which in sum with the already existing ones in the Notepad++ filebuffer exceeds that 2GB...)

So one has two options: either a complex monitoring of the Notepad++ filebuffers size and reloading these with that large-flag when reaching the 2GB or simply using that large-flag as the default one from the start (which is what this patch does...).

Fix #14981, close #14982
pull/14994/head
xomx 2024-04-12 00:24:49 +02:00 committed by Don Ho
parent 80e8a0dbe1
commit 126505180f
1 changed files with 4 additions and 3 deletions
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7
PowerEditor/src/ScintillaComponent/Buffer.cpp
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@ -728,8 +728,9 @@ BufferID FileManager::loadFile(const TCHAR* filename, Document doc, int encoding
bool ownDoc = false;
if (!doc)
{
// If file exceeds 200MB, activate large file mode
doc = (Document)_pscratchTilla->execute(SCI_CREATEDOCUMENT, 0, isLargeFile ? SC_DOCUMENTOPTION_STYLES_NONE | SC_DOCUMENTOPTION_TEXT_LARGE : 0);
// if file exceeds the _largeFileSizeDefInByte, disable the Scintilla styling (results in half memory consumption)
doc = static_cast<Document>(_pscratchTilla->execute(SCI_CREATEDOCUMENT, 0,
isLargeFile ? SC_DOCUMENTOPTION_STYLES_NONE | SC_DOCUMENTOPTION_TEXT_LARGE : SC_DOCUMENTOPTION_TEXT_LARGE));
ownDoc = true;
}
@ -1354,7 +1355,7 @@ BufferID FileManager::newEmptyDocument()
wsprintf(nb, TEXT("%d"), static_cast<int>(nextUntitledNewNumber()));
newTitle += nb;
Document doc = (Document)_pscratchTilla->execute(SCI_CREATEDOCUMENT); //this already sets a reference for filemanager
Document doc = static_cast<Document>(_pscratchTilla->execute(SCI_CREATEDOCUMENT, 0, SC_DOCUMENTOPTION_TEXT_LARGE)); // this already sets a reference for filemanager
Buffer* newBuf = new Buffer(this, _nextBufferID, doc, DOC_UNNAMED, newTitle.c_str(), false);
NppParameters& nppParamInst = NppParameters::getInstance();