2 * Copyright © 2004 Red Hat, Inc.
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * Red Hat, Inc. not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Red Hat, Inc. makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: Carl D. Worth <cworth@cworth.org>
28 * 2004-11-04 Ned Konz <ned@squeakland.org>
30 * Reported bug on mailing list:
32 * From: Ned Konz <ned@squeakland.org>
33 * To: cairo@cairographics.org
34 * Date: Thu, 4 Nov 2004 09:49:38 -0800
35 * Subject: [cairo] getting assertions [cairo_cache.c:143: _entry_destroy:
36 * Assertion `cache->used_memory > entry->memory' failed]
38 * The attached program dies on me with the assert
41 * testCairo: cairo_cache.c:143: _entry_destroy: Assertion `cache->used_memory > entry->memory' failed.
43 * 2004-11-04 Carl Worth <cworth@cworth.org>
45 * I trimmed down Ned's example to the folllowing test while still
46 * maintaining the assertion.
48 * Oh, actually, it looks like I may have triggered something
51 * text_cache_crash: cairo_cache.c:422: _cairo_cache_lookup: Assertion `cache->max_memory >= (cache->used_memory + new_entry->memory)' failed.
53 * I'll have to go back and try the original test after I fix this.
55 * 2004-11-13 Carl Worth <cworth@cworth.org>
57 * Found the bug. cairo_gstate_select_font was noticing when the
58 * same font was selected twice in a row and was erroneously failing
59 * to free the old reference. Committed a fix and verified it also
60 * fixed the original test case.
63 #include "cairo-test.h"
65 static cairo_test_status_t
66 draw (cairo_t *cr, int width, int height)
68 /* Once there was a bug that choked when selecting the same font twice. */
69 cairo_select_font_face (cr, "sans",
70 CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
71 cairo_set_font_size (cr, 40.0);
73 cairo_select_font_face (cr, "sans",
74 CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
75 cairo_set_font_size (cr, 40.0);
76 cairo_move_to (cr, 10, 50);
77 cairo_show_text (cr, "hello");
79 /* Then there was a bug that choked when selecting a font too big
82 cairo_set_font_size (cr, 500);
83 cairo_show_text (cr, "hello");
85 return CAIRO_TEST_SUCCESS;
88 CAIRO_TEST (text_cache_crash,
89 "Test case for bug causing an assertion failure in _cairo_cache_lookup",
90 "text, stress", /* keywords */
91 NULL, /* requirements */