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skia2/include/private/SkSafe32.h

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saturate some irect ops for fuzzers Bug: skia: Change-Id: I1c4f879a455048652abb619814841cd687a0474a Reviewed-on: https://skia-review.googlesource.com/101881 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Mike Reed <reed@google.com>
2018-01-30 21:01:33 +00:00
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSafe32_DEFINED
#define SkSafe32_DEFINED
rewrite includes to not need so much -Ifoo Current strategy: everything from the top Things to look at first are the manual changes: - added tools/rewrite_includes.py - removed -Idirectives from BUILD.gn - various compile.sh simplifications - tweak tools/embed_resources.py - update gn/find_headers.py to write paths from the top - update gn/gn_to_bp.py SkUserConfig.h layout so that #include "include/config/SkUserConfig.h" always gets the header we want. No-Presubmit: true Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706 Commit-Queue: Mike Klein <mtklein@google.com> Reviewed-by: Hal Canary <halcanary@google.com> Reviewed-by: Brian Osman <brianosman@google.com> Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-23 17:05:21 +00:00
#include "include/core/SkTypes.h"
use 64bit math in TArray realloc Bug: oss-fuzz:8217 Change-Id: Idecd1867e7047744477c7dfbb6c9bc5654a36ade Reviewed-on: https://skia-review.googlesource.com/127324 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Mike Reed <reed@google.com>
2018-05-10 14:55:43 +00:00
saturate some irect ops for fuzzers Bug: skia: Change-Id: I1c4f879a455048652abb619814841cd687a0474a Reviewed-on: https://skia-review.googlesource.com/101881 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Mike Reed <reed@google.com>
2018-01-30 21:01:33 +00:00
static constexpr int32_t Sk64_pin_to_s32(int64_t x) {
Fixed warnings for casting large type to smaller one. Change-Id: Ib3e2661d0383bf154bc9178dac070dfd910a393c Reviewed-on: https://skia-review.googlesource.com/115200 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Mike Klein <mtklein@google.com>
2018-03-20 08:38:31 +00:00
return x < SK_MinS32 ? SK_MinS32 : (x > SK_MaxS32 ? SK_MaxS32 : (int32_t)x);
saturate some irect ops for fuzzers Bug: skia: Change-Id: I1c4f879a455048652abb619814841cd687a0474a Reviewed-on: https://skia-review.googlesource.com/101881 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Mike Reed <reed@google.com>
2018-01-30 21:01:33 +00:00
}
static constexpr int32_t Sk32_sat_add(int32_t a, int32_t b) {
return Sk64_pin_to_s32((int64_t)a + (int64_t)b);
}
static constexpr int32_t Sk32_sat_sub(int32_t a, int32_t b) {
return Sk64_pin_to_s32((int64_t)a - (int64_t)b);
}
// To avoid UBSAN complaints about 2's compliment overflows
//
use safe increment for edge walker Bug: oss-fuzz:6126 Change-Id: I8f6865cbbbfbe37acf940cc2d4ae93204ba7168d Reviewed-on: https://skia-review.googlesource.com/107783 Reviewed-by: Mike Klein <mtklein@chromium.org> Commit-Queue: Mike Reed <reed@google.com>
2018-02-15 16:17:56 +00:00
static constexpr int32_t Sk32_can_overflow_add(int32_t a, int32_t b) {
return (int32_t)((uint32_t)a + (uint32_t)b);
}
saturate some irect ops for fuzzers Bug: skia: Change-Id: I1c4f879a455048652abb619814841cd687a0474a Reviewed-on: https://skia-review.googlesource.com/101881 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Mike Reed <reed@google.com>
2018-01-30 21:01:33 +00:00
static constexpr int32_t Sk32_can_overflow_sub(int32_t a, int32_t b) {
return (int32_t)((uint32_t)a - (uint32_t)b);
}
#endif
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