Add new test demonstrating assertion failure in cairo_cache_lookup.

Add new test showing problems with rotated text.

1 files changed, 85 insertions, 0 deletions

diff --git a/test/text-cache-crash.c b/test/text-cache-crash.c
new file mode 100644
index 000000000..56502345e
--- /dev/null
+++ b/test/text-cache-crash.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright © 2004 Red Hat, Inc.
+ *
+ * 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
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ */
+
+/* Bug history
+ *
+ * 2004-11-04 Ned Konz <ned@squeakland.org>
+ *
+ *   Reported bug on mailing list:
+ *
+ *	From: Ned Konz <ned@squeakland.org>
+ *	To: cairo@cairographics.org
+ *	Date: Thu, 4 Nov 2004 09:49:38 -0800
+ *	Subject: [cairo] getting assertions [cairo_cache.c:143: _entry_destroy:
+ *	        Assertion `cache->used_memory > entry->memory' failed]
+ *
+ *	The attached program dies on me with the assert
+ *
+ *	$ ./testCairo
+ *	testCairo: cairo_cache.c:143: _entry_destroy: Assertion `cache->used_memory > entry->memory' failed.
+ *
+ * 2004-11-04 Carl Worth <cworth@cworth.org>
+ *
+ *   I trimmed down Ned's example to the folllowing test while still
+ *   maintaining the assertion.
+ *
+ *   Oh, actually, it looks like I may have triggered something
+ *   slightly different:
+ *
+ *	text_cache_crash: cairo_cache.c:422: _cairo_cache_lookup: Assertion `cache->max_memory >= (cache->used_memory + new_entry->memory)' failed.
+ *
+ *   I'll have to go back and try the original test after I fix this.
+ */
+
+#include "cairo_test.h"
+
+#define WIDTH  100
+#define HEIGHT 60
+
+cairo_test_t test = {
+    "text_cache_crash",
+    "Test case for bug causing an assertion failure in _cairo_cache_lookup",
+    WIDTH, HEIGHT
+};
+#include <cairo.h>
+
+static void
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_select_font(cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
+    cairo_scale_font(cr, 40.0);
+
+    cairo_select_font(cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
+    cairo_scale_font(cr, 40.0);
+    cairo_move_to(cr, 10, 50);
+    cairo_show_text(cr, "hello");
+}
+
+int
+main (void)
+{
+    return cairo_test (&test, draw);
+}
+