mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*
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* Copyright © 2020 Uli Schlachter, Heiko Lewin
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Author: Uli Schlachter <psychon@znc.in>
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* Author: Heiko Lewin <hlewin@gmx.de>
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*/
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#include "cairo-test.h"
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/* This test reproduces an overflow of a mask-buffer in cairo-image-compositor.c */
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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cairo_set_source_rgb (cr, 0., 0., 0.);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, 1., 1., 1.);
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cairo_set_line_width (cr, 1.);
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cairo_pattern_t *p = cairo_pattern_create_linear (0, 0, width, height);
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cairo_pattern_add_color_stop_rgb (p, 0, 0.99, 1, 1);
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cairo_pattern_add_color_stop_rgb (p, 1, 1, 1, 1);
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cairo_set_source (cr, p);
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cairo_pattern_destroy(p);
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cairo_move_to (cr, 0.5, -1);
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for (int i = 0; i < width; i+=3) {
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cairo_rel_line_to (cr, 2, 2);
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cairo_rel_line_to (cr, 1, -2);
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}
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cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
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cairo_stroke (cr);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (bug_image_compositor,
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"Crash in image-compositor",
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"stroke, stress", /* keywords */
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NULL, /* requirements */
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10000, 1,
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NULL, draw)
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