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[3ds] Fix assertion failure when file could not be opened 

Check result of IOSystem::Open before constructing stream.

Partially addresses #3888.
pull/3890/head
Jason C 2021-05-05 17:30:05 -04:00
parent 785cca1bb4
commit 116ebf6e10
1 changed files with 7 additions and 1 deletions
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8
code/AssetLib/3DS/3DSLoader.cpp
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@ -143,7 +143,13 @@ void Discreet3DSImporter::SetupProperties(const Importer * /*pImp*/) {
// Imports the given file into the given scene structure.
void Discreet3DSImporter::InternReadFile(const std::string &pFile,
aiScene *pScene, IOSystem *pIOHandler) {
StreamReaderLE theStream(pIOHandler->Open(pFile, "rb"));
auto theFile = pIOHandler->Open(pFile, "rb");
if (!theFile) {
throw DeadlyImportError("3DS: Could not open ", pFile);
}
StreamReaderLE theStream(theFile);
// We should have at least one chunk
if (theStream.GetRemainingSize() < 16) {