luau/fuzz/number.cpp

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2022-01-06 22:10:07 +00:00
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#include "Luau/Common.h"
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <stdlib.h>
#define LUAI_MAXNUM2STR 48
char* luai_num2str(char* buf, double n);
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, size_t Size)
{
if (Size < 8)
return 0;
double num;
memcpy(&num, Data, 8);
char buf[LUAI_MAXNUM2STR];
char* end = luai_num2str(buf, num);
LUAU_ASSERT(end < buf + sizeof(buf));
*end = 0;
double rec = strtod(buf, nullptr);
LUAU_ASSERT(rec == num || (rec != rec && num != num));
return 0;
}