[test] Add large-source to exercise handling of massive images.

This test exercises https://bugzilla.mozilla.org/show_bug.cgi?id=424333.

The test is expected to fail due to issues with pixman, but cairo
should fail gracefully and neither crash nor cause XErrors.

1 files changed, 109 insertions, 0 deletions

diff --git a/test/large-source.c b/test/large-source.c
new file mode 100644
index 00000000..c4781d0a
--- /dev/null
+++ b/test/large-source.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright © Chris Wilson, 2008
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+/* This is a test case for the following bug:
+ *
+ *	crafted gif file will crash firefox
+ *	[XError: 'BadAlloc (insufficient resources for operation)']
+ *	https://bugzilla.mozilla.org/show_bug.cgi?id=424333
+ *
+ * The output is currently marked as XFAIL as pixman is still limited
+ * to 16.16.
+ */
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "large-source",
+    "Exercises mozilla bug 424333 - handling of massive images",
+    20, 20,
+    draw
+};
+
+#ifdef WORDS_BIGENDIAN
+#define RED_MASK 0xA0
+#define GREEN_MASK 0xA
+#else
+#define RED_MASK 0x5
+#define GREEN_MASK 0x50
+#endif
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *surface;
+    unsigned char *data;
+
+    cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
+    cairo_paint (cr);
+
+    surface = cairo_image_surface_create (CAIRO_FORMAT_A1, 64000, 20);
+    data = cairo_image_surface_get_data (surface);
+    if (data != NULL) {
+	int stride = cairo_image_surface_get_stride (surface);
+	int width  = cairo_image_surface_get_width  (surface);
+	int height = cairo_image_surface_get_height (surface);
+	int x, y;
+
+	for (y = 0; y < height; y++) {
+	    for (x = 0; x < (width + 7) / 8; x++)
+		data[x] = RED_MASK;
+	    data += stride;
+	}
+    }
+
+    cairo_set_source_rgb (cr, 1, 0, 0); /* red */
+    cairo_mask_surface (cr, surface, 0, 0);
+    cairo_surface_destroy (surface);
+
+    surface = cairo_image_surface_create (CAIRO_FORMAT_A1, 20, 64000);
+    data = cairo_image_surface_get_data (surface);
+    if (data != NULL) {
+	int stride = cairo_image_surface_get_stride (surface);
+	int width  = cairo_image_surface_get_width  (surface);
+	int height = cairo_image_surface_get_height (surface);
+	int x, y;
+
+	for (y = 0; y < height; y++) {
+	    for (x = 0; x < (width + 7) / 8; x++)
+		data[x] = GREEN_MASK;
+	    data += stride;
+	}
+    }
+
+    cairo_set_source_rgb (cr, 0, 1, 0); /* green */
+    cairo_mask_surface (cr, surface, 0, 0);
+    cairo_surface_destroy (surface);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}