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Diffstat (limited to 'test/text-cache-crash.c')
| -rw-r--r-- | test/text-cache-crash.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/test/text-cache-crash.c b/test/text-cache-crash.c new file mode 100644 index 000000000..4786af4d5 --- /dev/null +++ b/test/text-cache-crash.c @@ -0,0 +1,93 @@ +/* + * 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. + * + * 2004-11-13 Carl Worth <cworth@cworth.org> + * + * Found the bug. cairo_gstate_select_font was noticing when the + * same font was selected twice in a row and was erroneously failing + * to free the old reference. Committed a fix and verified it also + * fixed the original test case. + */ + +#include "cairo-test.h" + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + /* Once there was a bug that choked when selecting the same font twice. */ + cairo_select_font_face (cr, "sans", + CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD); + cairo_set_font_size (cr, 40.0); + + cairo_select_font_face (cr, "sans", + CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD); + cairo_set_font_size (cr, 40.0); + cairo_move_to (cr, 10, 50); + cairo_show_text (cr, "hello"); + + /* Then there was a bug that choked when selecting a font too big + * for the cache. */ + + cairo_set_font_size (cr, 500); + cairo_show_text (cr, "hello"); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (text_cache_crash, + "Test case for bug causing an assertion failure in _cairo_cache_lookup", + "text, stress", /* keywords */ + NULL, /* requirements */ + 0, 0, + NULL, draw) |