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).
81 lines
3.1 KiB
C++
81 lines
3.1 KiB
C++
//===- FuzzerExtraCountersWindows.cpp - Extra coverage counters for Win32 -===//
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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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// Extra coverage counters defined by user code for Windows.
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//===----------------------------------------------------------------------===//
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#include "FuzzerPlatform.h"
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#include <cstdint>
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#if LIBFUZZER_WINDOWS
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#include <windows.h>
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namespace fuzzer {
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//
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// The __start___libfuzzer_extra_counters variable is align 16, size 16 to
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// ensure the padding between it and the next variable in this section (either
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// __libfuzzer_extra_counters or __stop___libfuzzer_extra_counters) will be
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// located at (__start___libfuzzer_extra_counters +
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// sizeof(__start___libfuzzer_extra_counters)). Otherwise, the calculation of
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// (stop - (start + sizeof(start))) might be skewed.
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//
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// The section name, __libfuzzer_extra_countaaa ends with "aaa", so it sorts
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// before __libfuzzer_extra_counters alphabetically. We want the start symbol to
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// be placed in the section just before the user supplied counters (if present).
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//
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#pragma section(".data$__libfuzzer_extra_countaaa")
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ATTRIBUTE_ALIGNED(16)
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__declspec(allocate(".data$__libfuzzer_extra_countaaa")) uint8_t
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__start___libfuzzer_extra_counters[16] = {0};
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//
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// Example of what the user-supplied counters should look like. First, the
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// pragma to create the section name. It will fall alphabetically between
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// ".data$__libfuzzer_extra_countaaa" and ".data$__libfuzzer_extra_countzzz".
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// Next, the declspec to allocate the variable inside the specified section.
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// Finally, some array, struct, whatever that is used to track the counter data.
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// The size of this variable is computed at runtime by finding the difference of
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// __stop___libfuzzer_extra_counters and __start___libfuzzer_extra_counters +
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// sizeof(__start___libfuzzer_extra_counters).
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//
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//
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// #pragma section(".data$__libfuzzer_extra_counters")
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// __declspec(allocate(".data$__libfuzzer_extra_counters"))
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// uint8_t any_name_variable[64 * 1024];
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//
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//
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// Here, the section name, __libfuzzer_extra_countzzz ends with "zzz", so it
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// sorts after __libfuzzer_extra_counters alphabetically. We want the stop
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// symbol to be placed in the section just after the user supplied counters (if
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// present). Align to 1 so there isn't any padding placed between this and the
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// previous variable.
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//
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#pragma section(".data$__libfuzzer_extra_countzzz")
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ATTRIBUTE_ALIGNED(1)
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__declspec(allocate(".data$__libfuzzer_extra_countzzz")) uint8_t
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__stop___libfuzzer_extra_counters = 0;
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uint8_t *ExtraCountersBegin() {
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return __start___libfuzzer_extra_counters +
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sizeof(__start___libfuzzer_extra_counters);
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}
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uint8_t *ExtraCountersEnd() { return &__stop___libfuzzer_extra_counters; }
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ATTRIBUTE_NO_SANITIZE_ALL
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void ClearExtraCounters() {
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uint8_t *Beg = ExtraCountersBegin();
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SecureZeroMemory(Beg, ExtraCountersEnd() - Beg);
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}
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} // namespace fuzzer
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#endif
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