JPGDataset::CreateCopy(): fix potential crash recently introduced (ma…

…ster only)
rouault · Jan 2, 2023 · 30daf01 · 30daf01
1 parent df9c728
commit 30daf01
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/frmts/jpeg/jpgdataset.cpp b/frmts/jpeg/jpgdataset.cpp
@@ -3889,7 +3889,8 @@ GDALDataset *JPGDataset::CreateCopy(const char *pszFilename,
 
     // Try to convert losslessly from JPEGXL
     auto poUnderlyingSrcDS = GetUnderlyingDataset(poSrcDS);
-    if (poUnderlyingSrcDS->GetDriver() != nullptr &&
+    if (poUnderlyingSrcDS != nullptr &&
+        poUnderlyingSrcDS->GetDriver() != nullptr &&
         EQUAL(poUnderlyingSrcDS->GetDriver()->GetDescription(), "JPEGXL") &&
         CSLFetchNameValue(papszOptions, "QUALITY") == nullptr)
     {