Merge remote-tracking branch 'upstream/master'

[stockfish] / src / syzygy / tbprobe.cpp

diff --git a/src/syzygy/tbprobe.cpp b/src/syzygy/tbprobe.cpp
index 94d7371499cb8e3d96621e8275592c241e3cd046..3dbe18fb14ef4832b31d880ba61c382c996f04e3 100644 (file)
--- a/src/syzygy/tbprobe.cpp
+++ b/src/syzygy/tbprobe.cpp
@@ -1,7 +1,7 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (c) 2013 Ronald de Man
-  Copyright (C) 2016-2018 Marco Costalba, Lucas Braesch
+  Copyright (C) 2016-2019 Marco Costalba, Lucas Braesch
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -32,7 +32,7 @@
 #include "../movegen.h"
 #include "../position.h"
 #include "../search.h"
-#include "../thread_win32.h"
+#include "../thread_win32_osx.h"
 #include "../types.h"
 #include "../uci.h"
 
@@ -214,14 +214,22 @@ public:
             return *baseAddress = nullptr, nullptr;
 
         fstat(fd, &statbuf);
+
+        if (statbuf.st_size % 64 != 16)
+        {
+            std::cerr << "Corrupt tablebase file " << fname << std::endl;
+            exit(EXIT_FAILURE);
+        }
+
         *mapping = statbuf.st_size;
         *baseAddress = mmap(nullptr, statbuf.st_size, PROT_READ, MAP_SHARED, fd, 0);
         madvise(*baseAddress, statbuf.st_size, MADV_RANDOM);
         ::close(fd);
 
-        if (*baseAddress == MAP_FAILED) {
+        if (*baseAddress == MAP_FAILED)
+        {
             std::cerr << "Could not mmap() " << fname << std::endl;
-            exit(1);
+            exit(EXIT_FAILURE);
         }
 #else
         // Note FILE_FLAG_RANDOM_ACCESS is only a hint to Windows and as such may get ignored.
@@ -233,21 +241,30 @@ public:
 
         DWORD size_high;
         DWORD size_low = GetFileSize(fd, &size_high);
+
+        if (size_low % 64 != 16)
+        {
+            std::cerr << "Corrupt tablebase file " << fname << std::endl;
+            exit(EXIT_FAILURE);
+        }
+
         HANDLE mmap = CreateFileMapping(fd, nullptr, PAGE_READONLY, size_high, size_low, nullptr);
         CloseHandle(fd);
 
-        if (!mmap) {
+        if (!mmap)
+        {
             std::cerr << "CreateFileMapping() failed" << std::endl;
-            exit(1);
+            exit(EXIT_FAILURE);
         }
 
         *mapping = (uint64_t)mmap;
         *baseAddress = MapViewOfFile(mmap, FILE_MAP_READ, 0, 0, 0);
 
-        if (!*baseAddress) {
+        if (!*baseAddress)
+        {
             std::cerr << "MapViewOfFile() failed, name = " << fname
                       << ", error = " << GetLastError() << std::endl;
-            exit(1);
+            exit(EXIT_FAILURE);
         }
 #endif
         uint8_t* data = (uint8_t*)*baseAddress;
@@ -255,7 +272,8 @@ public:
         constexpr uint8_t Magics[][4] = { { 0xD7, 0x66, 0x0C, 0xA5 },
                                           { 0x71, 0xE8, 0x23, 0x5D } };
 
-        if (memcmp(data, Magics[type == WDL], 4)) {
+        if (memcmp(data, Magics[type == WDL], 4))
+        {
             std::cerr << "Corrupted table in file " << fname << std::endl;
             unmap(*baseAddress, *mapping);
             return *baseAddress = nullptr, nullptr;
@@ -416,7 +434,7 @@ class TBTables {
             }
         }
         std::cerr << "TB hash table size too low!" << std::endl;
-        exit(1);
+        exit(EXIT_FAILURE);
     }
 
 public: