From 9cffc56228498e9d9fb1c047e1e1f2daaabac698 Mon Sep 17 00:00:00 2001 From: Vladimir Vukicevic Date: Mon, 20 Nov 2006 15:30:04 -0800 Subject: [PATCH] [test] add big-trap test This test fills a single path (a trapezoid, even) that's larger than the 16.16 precision used in pixman and other code. It leads to memory scribbling and a crash. Note that there is no crash if a clip is not set. --- test/Makefile.am | 1 + test/big-trap.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+) create mode 100644 test/big-trap.c diff --git a/test/Makefile.am b/test/Makefile.am index f48c5ab12..61e40ba60 100644 --- a/test/Makefile.am +++ b/test/Makefile.am @@ -1,6 +1,7 @@ # Here are all the tests that are run unconditionally TESTS = \ a8-mask \ +big-trap \ caps-joins \ caps-joins-alpha \ caps-sub-paths \ diff --git a/test/big-trap.c b/test/big-trap.c new file mode 100644 index 000000000..b5e3255d0 --- /dev/null +++ b/test/big-trap.c @@ -0,0 +1,60 @@ +/* + * Copyright © 2006 Mozilla Corporation + * + * 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 + * Mozilla Corporation not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Mozilla Corporation makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION 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: Vladimir Vukicevic + */ + +#include "cairo-test.h" + +static cairo_test_draw_function_t draw; + +cairo_test_t test = { + "big-trap", + "Test oversize trapezoid with a clip region", + 100, 100, + draw +}; + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + /* Note that without the clip, this doesn't crash... */ + cairo_new_path (cr); + cairo_rectangle (cr, 0, 0, width, height); + cairo_clip (cr); + + cairo_new_path (cr); + cairo_line_to (cr, 8.0, 8.0); + cairo_line_to (cr, 312.0, 8.0); + cairo_line_to (cr, 310.0, 31378756.2666666666); + cairo_line_to (cr, 10.0, 31378756.2666666666); + cairo_line_to (cr, 8.0, 8.0); + cairo_fill (cr); + + return CAIRO_TEST_SUCCESS; +} + +int +main (void) +{ + return cairo_test (&test); +}