Proper fix for deep color overprint.gs9.28-temp-for-testing

The previous fix confused memset and memcpy. Properly write the
(native endian) 16 bit color values into the big endian buffer.

1 files changed, 16 insertions, 2 deletions

diff --git a/base/gsovrc.c b/base/gsovrc.c
index ad75b5809..d29808d15 100644
--- a/base/gsovrc.c
+++ b/base/gsovrc.c
@@ -1055,6 +1055,16 @@ overprint_copy_planes(gx_device * dev, const byte * data, int data_x, int raster
                                                x, y, w, h, plane_height);
     }
 }
+static void
+my_memset16_be(uint16_t *dst, uint16_t col, size_t w)
+{
+#if !ARCH_IS_BIG_ENDIAN
+    col = (col>>8) | (col<<8);
+#endif
+    while (w--) {
+        *dst++ = col;
+    }
+}
 
 /* Currently we really should only be here if the target device is planar
    AND it supports devn colors AND is 8 or 16 bit. */
@@ -1143,8 +1153,12 @@ overprint_fill_rectangle_hl_color(gx_device *dev,
                 operation we would just get the ones needed and set those. */
             if ((comps & 0x01) == 1) {
                 /* Not sure if a loop or a memset is better here */
-                memset(gb_params.data[k],
-                        ((pdcolor->colors.devn.values[k]) >> shift & mask), w<<deep);
+                if (deep)
+                    my_memset16_be((uint16_t *)(gb_params.data[k]),
+                                   pdcolor->colors.devn.values[k], w);
+                else
+                    memset(gb_params.data[k],
+                           ((pdcolor->colors.devn.values[k]) >> shift & mask), w);
             }
             comps >>= 1;
         }