Files
RedBear-OS/local/recipes/dev/libclc/source/compiler-rt/lib/fuzzer/FuzzerRandom.h
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class)
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).
2026-08-01 05:13:02 +03:00

49 lines
1.6 KiB
C++

//===- FuzzerRandom.h - Internal header for the Fuzzer ----------*- C++ -* ===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// fuzzer::Random
//===----------------------------------------------------------------------===//
#ifndef LLVM_FUZZER_RANDOM_H
#define LLVM_FUZZER_RANDOM_H
#include <cmath>
#include <random>
namespace fuzzer {
class Random : public std::minstd_rand {
public:
Random(unsigned int seed) : std::minstd_rand(seed) {}
result_type operator()() { return this->std::minstd_rand::operator()(); }
template <typename T>
typename std::enable_if<std::is_integral<T>::value, T>::type Rand() {
return static_cast<T>(this->operator()());
}
size_t RandBool() { return this->operator()() % 2; }
size_t SkewTowardsLast(size_t n) {
size_t T = this->operator()(n * n);
size_t Res = static_cast<size_t>(sqrt(T));
return Res;
}
template <typename T>
typename std::enable_if<std::is_integral<T>::value, T>::type operator()(T n) {
return n ? Rand<T>() % n : 0;
}
template <typename T>
typename std::enable_if<std::is_integral<T>::value, T>::type
operator()(T From, T To) {
assert(From < To);
auto RangeSize = static_cast<unsigned long long>(To) -
static_cast<unsigned long long>(From) + 1;
return static_cast<T>(this->operator()(RangeSize) + From);
}
};
} // namespace fuzzer
#endif // LLVM_FUZZER_RANDOM_H