Grcov report - line-width-zero.c

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/*

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 * Copyright © 2007 Red Hat, Inc.

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

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*/

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#include "cairo-test.h"

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/* This is a test case for the following bug:

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 *	Crash in cairo_stroke_extents when line width is 0 and line cap is ROUND

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 *	(_cairo_pen_find_active_cw_vertex_index)

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 *	https://bugs.freedesktop.org/show_bug.cgi?id=10231

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*/

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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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    double x1, y1, x2, y2;

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3

    cairo_move_to (cr, 0.0, 0.0);

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3

    cairo_line_to (cr, 100.0, 100.0);

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3

    cairo_set_line_width (cr, 0.0);

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    cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);

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3

    cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);

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3

    cairo_stroke_extents (cr, &x1, &y1, &x2, &y2);

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3

    cairo_in_stroke (cr, 50, 50);

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    cairo_stroke_preserve (cr);

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3

    cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);

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3

    cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);

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3

    cairo_stroke_extents (cr, &x1, &y1, &x2, &y2);

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    cairo_in_stroke (cr, 50, 50);

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    cairo_stroke_preserve (cr);

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3

    cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);

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    cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);

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3

    cairo_stroke_extents (cr, &x1, &y1, &x2, &y2);

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    cairo_in_stroke (cr, 50, 50);

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    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (line_width_zero,

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	    "Test all stroke operations and all cap,join styles with line width of zero",

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	    "stroke", /* keywords */

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	    NULL, /* requirements */

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	    0, 0,

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	    NULL, draw)