diff --git a/device.c b/device.c
--- a/device.c
+++ b/device.c
@@ -249,7 +249,7 @@ cDevice *cDevice::GetDevice(const cChannel *Channel, int Priority, bool LiveView
 {
   // Collect the current priorities of all CAM slots that can decrypt the channel:
   int NumCamSlots = CamSlots.Count();
-  int SlotPriority[NumCamSlots];
+  int SlotPriority[std::max(1, NumCamSlots)];
   int NumUsableSlots = 0;
   bool InternalCamNeeded = false;
   if (Channel->Ca() >= CA_ENCRYPTED_MIN) {
diff --git a/font.c b/font.c
--- a/font.c
+++ b/font.c
@@ -74,7 +74,8 @@ cGlyph::cGlyph(uint CharCode, FT_GlyphSlotRec_ *GlyphData)
   rows = GlyphData->bitmap.rows;
   pitch = GlyphData->bitmap.pitch;
   bitmap = MALLOC(uchar, rows * pitch);
-  memcpy(bitmap, GlyphData->bitmap.buffer, rows * pitch);
+  if (int bytes = rows * pitch)
+     memcpy(bitmap, GlyphData->bitmap.buffer, bytes);
 }
 
 cGlyph::~cGlyph()