vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
//===- FuzzerValueBitMap.h - INTERNAL - Bit map -----------------*- C++ -* ===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// ValueBitMap.
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_FUZZER_VALUE_BIT_MAP_H
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#define LLVM_FUZZER_VALUE_BIT_MAP_H
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#include "FuzzerPlatform.h"
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#include <cstdint>
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namespace fuzzer {
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// A bit map containing kMapSizeInWords bits.
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struct ValueBitMap {
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static const size_t kMapSizeInBits = 1 << 16;
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static const size_t kMapPrimeMod = 65371; // Largest Prime < kMapSizeInBits;
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static const size_t kBitsInWord = (sizeof(uintptr_t) * 8);
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static const size_t kMapSizeInWords = kMapSizeInBits / kBitsInWord;
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public:
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// Clears all bits.
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void Reset() { memset(Map, 0, sizeof(Map)); }
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// Computes a hash function of Value and sets the corresponding bit.
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// Returns true if the bit was changed from 0 to 1.
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ATTRIBUTE_NO_SANITIZE_ALL
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inline bool AddValue(uintptr_t Value) {
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uintptr_t Idx = Value % kMapSizeInBits;
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uintptr_t WordIdx = Idx / kBitsInWord;
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uintptr_t BitIdx = Idx % kBitsInWord;
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uintptr_t Old = Map[WordIdx];
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uintptr_t New = Old | (1ULL << BitIdx);
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Map[WordIdx] = New;
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return New != Old;
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}
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ATTRIBUTE_NO_SANITIZE_ALL
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inline bool AddValueModPrime(uintptr_t Value) {
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return AddValue(Value % kMapPrimeMod);
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}
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inline bool Get(uintptr_t Idx) {
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assert(Idx < kMapSizeInBits);
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uintptr_t WordIdx = Idx / kBitsInWord;
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uintptr_t BitIdx = Idx % kBitsInWord;
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return Map[WordIdx] & (1ULL << BitIdx);
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}
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size_t SizeInBits() const { return kMapSizeInBits; }
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template <class Callback>
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ATTRIBUTE_NO_SANITIZE_ALL
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void ForEach(Callback CB) const {
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for (size_t i = 0; i < kMapSizeInWords; i++)
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if (uintptr_t M = Map[i])
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for (size_t j = 0; j < sizeof(M) * 8; j++)
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if (M & ((uintptr_t)1 << j))
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CB(i * sizeof(M) * 8 + j);
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}
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private:
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ATTRIBUTE_ALIGNED(512) uintptr_t Map[kMapSizeInWords];
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};
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} // namespace fuzzer
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#endif // LLVM_FUZZER_VALUE_BIT_MAP_H
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