From: Michael An <man4@users.noreply.github.com>
Date: Thu, 21 Jun 2018 01:05:27 +0000 (-0400)
Subject: Fix GCC 8 cast warnings
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=06a853eb9c5173c30b31e75d0828c29dd65ebca4

Fix GCC 8 cast warnings

Silences the following warnings when compiling with GCC 8.
The fix is to use an intermediate pointer to anonymous function:

```
misc.cpp: In function 'int WinProcGroup::get_group(size_t)':
misc.cpp:241:77: warning: cast between incompatible function types from 'FARPROC' {aka 'long long int (*)()'} to 'fun1_t' {aka 'bool (*)(_LOGICAL_PROCESSOR_RELATIONSHIP, _SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX*, long unsigned int*)'} [-Wcast-function-type]
   auto fun1 = (fun1_t)GetProcAddress(k32, "GetLogicalProcessorInformationEx");
                                                                             ^
misc.cpp: In function 'void WinProcGroup::bindThisThread(size_t)':
misc.cpp:309:71: warning: cast between incompatible function types from 'FARPROC' {aka 'long long int (*)()'} to 'fun2_t' {aka 'bool (*)(short unsigned int, _GROUP_AFFINITY*)'} [-Wcast-function-type]
   auto fun2 = (fun2_t)GetProcAddress(k32, "GetNumaNodeProcessorMaskEx");
                                                                       ^
misc.cpp:310:67: warning: cast between incompatible function types from 'FARPROC' {aka 'long long int (*)()'} to 'fun3_t' {aka 'bool (*)(void*, const _GROUP_AFFINITY*, _GROUP_AFFINITY*)'} [-Wcast-function-type]
   auto fun3 = (fun3_t)GetProcAddress(k32, "SetThreadGroupAffinity");
                                                                   ^
```

No functional change.
---

diff --git a/src/misc.cpp b/src/misc.cpp
index 4e2d4057..e6a29af7 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -238,7 +238,7 @@ int get_group(size_t idx) {
 
   // Early exit if the needed API is not available at runtime
   HMODULE k32 = GetModuleHandle("Kernel32.dll");
-  auto fun1 = (fun1_t)GetProcAddress(k32, "GetLogicalProcessorInformationEx");
+  auto fun1 = (fun1_t)(void(*)())GetProcAddress(k32, "GetLogicalProcessorInformationEx");
   if (!fun1)
       return -1;
 
@@ -306,8 +306,8 @@ void bindThisThread(size_t idx) {
 
   // Early exit if the needed API are not available at runtime
   HMODULE k32 = GetModuleHandle("Kernel32.dll");
-  auto fun2 = (fun2_t)GetProcAddress(k32, "GetNumaNodeProcessorMaskEx");
-  auto fun3 = (fun3_t)GetProcAddress(k32, "SetThreadGroupAffinity");
+  auto fun2 = (fun2_t)(void(*)())GetProcAddress(k32, "GetNumaNodeProcessorMaskEx");
+  auto fun3 = (fun3_t)(void(*)())GetProcAddress(k32, "SetThreadGroupAffinity");
 
   if (!fun2 || !fun3)
       return;