1/*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8// Reminder of how to run:
9//  $ env CC=afl-clang CXX=afl-clang++ ./gyp_skia
10//  $ ninja -C out/Debug fuzz
11//  $ afl-fuzz -i fuzz-in -o fuzz-out out/Debug/fuzz -n ScaleToSides -b @@
12// where you seed fuzz-in/ with one or more small files.
13
14#include "Fuzz.h"
15#include "SkScaleToSides.h"
16#include <cmath>
17
18DEF_FUZZ(ScaleToSides, fuzz) {
19    float radius1, radius2, width;
20    fuzz->next(&radius1, &radius2, &width);
21
22    if (!std::isfinite(radius1) ||
23        !std::isfinite(radius2) ||
24        !std::isfinite(width)   ||
25        radius1 <= 0.0f         ||
26        radius2 <= 0.0f         ||
27        width <= 0.0f)
28    {
29        return;
30    }
31
32    double scale = (double)width / ((double)radius1 + (double)radius2);
33    if (scale >= 1.0 || scale <= 0.0) {
34        return;
35    }
36    SkDebugf("%g %g %g %g\n", radius1, radius2, width, scale);
37    SkScaleToSides::AdjustRadii(width, scale, &radius1, &radius2);
38
39    // TODO(mtklein): add fuzz->keepResult()
40    volatile float junk = 0.0f;
41    junk *= radius1;
42    junk *= radius2;
43}
44