Grcov report - text-cache-crash.c

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/*

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 * Copyright © 2004 Red Hat, Inc.

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 * Permission to use, copy, modify, distribute, and sell this software

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 * and its documentation for any purpose is hereby granted without

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 * fee, provided that the above copyright notice appear in all copies

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 * and that both that copyright notice and this permission notice

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 * appear in supporting documentation, and that the name of

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 * Red Hat, Inc. not be used in advertising or publicity pertaining to

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 * distribution of the software without specific, written prior

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 * permission. Red Hat, Inc. makes no representations about the

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 * suitability of this software for any purpose.  It is provided "as

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 * is" without express or implied warranty.

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 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS

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 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

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 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,

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 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER

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 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION

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 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR

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 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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 * Author: Carl D. Worth <cworth@cworth.org>

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*/

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/* Bug history

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 * 2004-11-04 Ned Konz <ned@squeakland.org>

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 *   Reported bug on mailing list:

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 *	From: Ned Konz <ned@squeakland.org>

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 *	To: cairo@cairographics.org

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 *	Date: Thu, 4 Nov 2004 09:49:38 -0800

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 *	Subject: [cairo] getting assertions [cairo_cache.c:143: _entry_destroy:

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 *	        Assertion `cache->used_memory > entry->memory' failed]

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 *	The attached program dies on me with the assert

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 *	$ ./testCairo

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 *	testCairo: cairo_cache.c:143: _entry_destroy: Assertion `cache->used_memory > entry->memory' failed.

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 * 2004-11-04 Carl Worth <cworth@cworth.org>

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 *   I trimmed down Ned's example to the following test while still

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 *   maintaining the assertion.

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 *   Oh, actually, it looks like I may have triggered something

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 *   slightly different:

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 *	text_cache_crash: cairo_cache.c:422: _cairo_cache_lookup: Assertion `cache->max_memory >= (cache->used_memory + new_entry->memory)' failed.

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 *   I'll have to go back and try the original test after I fix this.

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 * 2004-11-13 Carl Worth <cworth@cworth.org>

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 *   Found the bug. cairo_gstate_select_font was noticing when the

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 *   same font was selected twice in a row and was erroneously failing

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 *   to free the old reference. Committed a fix and verified it also

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 *   fixed the original test case.

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*/

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#include "cairo-test.h"

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static cairo_test_status_t

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3

draw (cairo_t *cr, int width, int height)

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    /* Once there was a bug that choked when selecting the same font twice. */

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    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",

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			    CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);

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    cairo_set_font_size (cr, 40.0);

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    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",

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			    CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);

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    cairo_set_font_size (cr, 40.0);

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    cairo_move_to (cr, 10, 50);

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    cairo_show_text (cr, "hello");

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    /* Then there was a bug that choked when selecting a font too big

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     * for the cache. */

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    cairo_set_font_size (cr, 500);

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    cairo_show_text (cr, "hello");

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (text_cache_crash,

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	    "Test case for bug causing an assertion failure in _cairo_cache_lookup",

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	    "text, stress", /* keywords */

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	    NULL, /* requirements */

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	    0, 0,

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	    NULL, draw)