1 files changed, 30 insertions, 0 deletions
diff --git a/qemu/pixman/test/region-translate-test.c b/qemu/pixman/test/region-translate-test.c
new file mode 100644
index 000000000..5a03027e8
--- /dev/null
+++ b/qemu/pixman/test/region-translate-test.c
@@ -0,0 +1,30 @@
+#include <assert.h>
+#include "utils.h"
+
+/* Pixman had a bug where 32bit regions where clipped to 16bit sizes when
+ * pixman_region32_translate() was called. This test exercises that bug.
+ */
+
+#define LARGE 32000
+
+int
+main (int argc, char **argv)
+{
+  pixman_box32_t rect = { -LARGE, -LARGE, LARGE, LARGE };
+  pixman_region32_t r1, r2;
+
+  pixman_region32_init_rects (&r1, &rect, 1);
+  pixman_region32_init_rect (&r2, rect.x1, rect.y1, rect.x2 - rect.x1, rect.y2 - rect.y1);
+
+  assert (pixman_region32_equal (&r1,  &r2));
+
+  pixman_region32_translate (&r1, -LARGE, LARGE);
+  pixman_region32_translate (&r1, LARGE, -LARGE);
+
+  assert (pixman_region32_equal (&r1,  &r2));
+
+  pixman_region32_fini (&r1);
+  pixman_region32_fini (&r2);
+
+  return 0;
+}