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Index: vtk9/Rendering/Matplotlib/vtkMatplotlibMathTextUtilities.cxx
===================================================================
--- vtk9.orig/Rendering/Matplotlib/vtkMatplotlibMathTextUtilities.cxx 2026-01-25 23:22:22.741023671 +0100
+++ vtk9/Rendering/Matplotlib/vtkMatplotlibMathTextUtilities.cxx 2026-02-05 12:10:11.414134274 +0100
@@ -1029,6 +1029,12 @@
{
unsigned char* ptr = static_cast<unsigned char*>(image->GetScalarPointer(col, row, 0));
+ if (ptr == nullptr)
+ {
+ vtkErrorMacro("image returned null ScalarPointer.");
+ return false;
+ }
+
// Background, do not load python data
if (row > pythonRowStart || col < pythonColStart || row <= pythonRowEnd ||
col >= pythonColEnd)
|
