From 530ffd0b7d3c39757b20f00716e486b5caf89aff Mon Sep 17 00:00:00 2001 From: sanine Date: Wed, 12 Oct 2022 12:03:23 -0500 Subject: add cairo --- libs/cairo-1.16.0/test/arc-infinite-loop.c | 61 ++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 libs/cairo-1.16.0/test/arc-infinite-loop.c (limited to 'libs/cairo-1.16.0/test/arc-infinite-loop.c') diff --git a/libs/cairo-1.16.0/test/arc-infinite-loop.c b/libs/cairo-1.16.0/test/arc-infinite-loop.c new file mode 100644 index 0000000..8b469ea --- /dev/null +++ b/libs/cairo-1.16.0/test/arc-infinite-loop.c @@ -0,0 +1,61 @@ +/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ +/* + * Copyright 2010 Andrea Canciani + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Author: Andrea Canciani + */ + +#include "cairo-test.h" +#include + +#define SIZE 8 + +/* + cairo_arc can hang in an infinite loop if given huge (so big that + adding/subtracting 4*M_PI to them doesn't change the value because + of floating point rounding). + + The purpose of this test is to check that cairo doesn't hang or crash. +*/ + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + /* Check if the code that guarantees start <= end hangs */ + cairo_arc (cr, 0, 0, 1, 1024 / DBL_EPSILON * M_PI, 0); + + /* Check if the code that handles huge angles hangs */ + cairo_arc (cr, 0, 0, 1, 0, 1024 / DBL_EPSILON * M_PI); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (arc_infinite_loop, + "Test cairo_arc with huge angles", + "arc", /* keywords */ + NULL, /* requirements */ + SIZE, SIZE, + NULL, draw) -- cgit v1.2.1