--- /dev/null
+Patch stolen from Mageia Cauldron but had to be modified quite a bit.
+
+diff --git a/filters/karbon/pdf/SvgOutputDev.cpp b/filters/karbon/pdf/SvgOutputDev.cpp
+index ffdbf01..70bc9f8 100644
+--- a/filters/karbon/pdf/SvgOutputDev.cpp
++++ b/filters/karbon/pdf/SvgOutputDev.cpp
+@@ -405,7 +405,7 @@ void SvgOutputDev::drawString(GfxState * state, GooString * s)
+ const char * p = s->c_str();
+ int len = s->getLength();
+ CharCode code;
+- Unicode *u = nullptr;
++ const Unicode *u = nullptr;
+ int uLen;
+ double dx, dy, originX, originY;
+ while (len > 0) {
+@@ -545,7 +545,7 @@ void SvgOutputDev::drawImage(GfxState *state, Object */*ref*/, Stream *str,
+
+ void SvgOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
+ int width, int height, GfxImageColorMap *colorMap,
+- bool /*interpolate*/, int *maskColors, bool inlineImg)
++ bool /*interpolate*/, const int *maskColors, bool inlineImg)
+ {
+ drawImage(state, ref, str, width, height, colorMap, maskColors, inlineImg);
+ }
+--- a/filters/karbon/pdf/SvgOutputDev.h
++++ b/filters/karbon/pdf/SvgOutputDev.h
+@@ -63,7 +63,7 @@ public:
+ // images
+ void drawImage(GfxState *state, Object *ref, Stream *str,
+ int width, int height, GfxImageColorMap *colorMap,
+- bool interpolate, int *maskColors, bool inlineImg) override;
++ bool interpolate, const int *maskColors, bool inlineImg) override;
+
+ // styles
+ virtual void updateAll(GfxState *state);