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431ea2d076
docgen relies on the convention that we have a file foo.cpp in libc/src/\<header\>/. Because the above functions weren't in libc/src/strings/ but rather libc/src/string/, docgen could not find that we had implemented these. Rather than add special carve outs to docgen, let's fix up our sources for these 7 functions to stick with the existing conventions the rest of the codebase follows. Link: #118860 Fixes: #118875
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
//===-- bcmp_fuzz.cpp ---------------------------------------------------===//
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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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///
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/// Fuzzing test for llvm-libc bcmp implementation.
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///
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//===----------------------------------------------------------------------===//
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#include "src/strings/bcmp.h"
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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static int reference_bcmp(const void *pa, const void *pb, size_t count)
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__attribute__((no_builtin)) {
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const auto *a = reinterpret_cast<const unsigned char *>(pa);
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const auto *b = reinterpret_cast<const unsigned char *>(pb);
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for (size_t i = 0; i < count; ++i, ++a, ++b)
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if (*a != *b)
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return 1;
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return 0;
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}
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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const auto normalize = [](int value) -> int {
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if (value == 0)
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return 0;
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return 1;
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};
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// We ignore the last byte is size is odd.
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const auto count = size / 2;
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const char *a = reinterpret_cast<const char *>(data);
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const char *b = reinterpret_cast<const char *>(data) + count;
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const int actual = LIBC_NAMESPACE::bcmp(a, b, count);
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const int reference = reference_bcmp(a, b, count);
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if (normalize(actual) == normalize(reference))
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return 0;
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const auto print = [](const char *msg, const char *buffer, size_t size) {
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printf("%s\"", msg);
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for (size_t i = 0; i < size; ++i)
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printf("\\x%02x", (uint8_t)buffer[i]);
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printf("\"\n");
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};
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printf("count : %zu\n", count);
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print("a : ", a, count);
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print("b : ", b, count);
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printf("expected : %d\n", reference);
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printf("actual : %d\n", actual);
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__builtin_trap();
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}
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