[C++/mingw] windows-nat.c casts

Fixes a set of errors like:

../../src/gdb/windows-nat.c: In function 'void _initialize_loadable()':
../../src/gdb/windows-nat.c:2778:30: error: invalid conversion from 'void*' to 'BOOL (*)(DWORD) {aka int (*)(long unsigned int)}' [-fpermissive]
       DebugActiveProcessStop = (void *)
                              ^

gdb/ChangeLog:
2015-11-17  Pedro Alves  <palves@redhat.com>

	* windows-nat.c (AdjustTokenPrivileges_ftype)
	(DebugActiveProcessStop_ftype, DebugBreakProcess_ftype)
	(DebugSetProcessKillOnExit_ftype, EnumProcessModules_ftype)
	(GetCurrentConsoleFont_ftype, GetModuleInformation_ftype)
	(LookupPrivilegeValueA_ftype, OpenProcessToken_ftype)
	(GetConsoleFontSize_ftype): New typedefs.
	(AdjustTokenPrivileges, DebugActiveProcessStop)
	(DebugBreakProcess, DebugSetProcessKillOnExit, EnumProcessModules)
	(GetConsoleFontSize, GetCurrentConsoleFont, GetModuleInformation)
	(LookupPrivilegeValueA, OpenProcessToken, GetConsoleFontSize):
	Adjust.
	(GetModuleFileNameEx_ftype): New typedef.
	(GetModuleFileNameEx): Use it.
	(_initialize_loadable): Define GPA macro and use it.

1 files changed, 57 insertions, 38 deletions

diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 8dfe211..2e12493 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -77,20 +77,41 @@
 #define GetConsoleFontSize		dyn_GetConsoleFontSize
 #define GetCurrentConsoleFont		dyn_GetCurrentConsoleFont
 
-static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
-					    DWORD, PTOKEN_PRIVILEGES, PDWORD);
-static BOOL WINAPI (*DebugActiveProcessStop) (DWORD);
-static BOOL WINAPI (*DebugBreakProcess) (HANDLE);
-static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL);
-static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD,
-					  LPDWORD);
-static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
-					    DWORD);
-static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID);
-static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
-static BOOL WINAPI (*GetCurrentConsoleFont) (HANDLE, BOOL,
-					     CONSOLE_FONT_INFO *);
-static COORD WINAPI (*GetConsoleFontSize) (HANDLE, DWORD);
+typedef BOOL WINAPI (AdjustTokenPrivileges_ftype) (HANDLE, BOOL,
+						   PTOKEN_PRIVILEGES,
+						   DWORD, PTOKEN_PRIVILEGES,
+						   PDWORD);
+static AdjustTokenPrivileges_ftype *AdjustTokenPrivileges;
+
+typedef BOOL WINAPI (DebugActiveProcessStop_ftype) (DWORD);
+static DebugActiveProcessStop_ftype *DebugActiveProcessStop;
+
+typedef BOOL WINAPI (DebugBreakProcess_ftype) (HANDLE);
+static DebugBreakProcess_ftype *DebugBreakProcess;
+
+typedef BOOL WINAPI (DebugSetProcessKillOnExit_ftype) (BOOL);
+static DebugSetProcessKillOnExit_ftype *DebugSetProcessKillOnExit;
+
+typedef BOOL WINAPI (EnumProcessModules_ftype) (HANDLE, HMODULE *, DWORD,
+						LPDWORD);
+static EnumProcessModules_ftype *EnumProcessModules;
+
+typedef BOOL WINAPI (GetModuleInformation_ftype) (HANDLE, HMODULE,
+						  LPMODULEINFO, DWORD);
+static GetModuleInformation_ftype *GetModuleInformation;
+
+typedef BOOL WINAPI (LookupPrivilegeValueA_ftype) (LPCSTR, LPCSTR, PLUID);
+static LookupPrivilegeValueA_ftype *LookupPrivilegeValueA;
+
+typedef BOOL WINAPI (OpenProcessToken_ftype) (HANDLE, DWORD, PHANDLE);
+static OpenProcessToken_ftype *OpenProcessToken;
+
+typedef BOOL WINAPI (GetCurrentConsoleFont_ftype) (HANDLE, BOOL,
+						   CONSOLE_FONT_INFO *);
+static GetCurrentConsoleFont_ftype *GetCurrentConsoleFont;
+
+typedef COORD WINAPI (GetConsoleFontSize_ftype) (HANDLE, DWORD);
+static GetConsoleFontSize_ftype *GetConsoleFontSize;
 
 #undef STARTUPINFO
 #undef CreateProcess
@@ -98,7 +119,8 @@ static COORD WINAPI (*GetConsoleFontSize) (HANDLE, DWORD);
 
 #ifndef __CYGWIN__
 # define __PMAX	(MAX_PATH + 1)
-  static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPSTR, DWORD);
+  typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE, LPSTR, DWORD);
+  static GetModuleFileNameEx_ftype *GetModuleFileNameEx;
 # define STARTUPINFO STARTUPINFOA
 # define CreateProcess CreateProcessA
 # define GetModuleFileNameEx_name "GetModuleFileNameExA"
@@ -110,8 +132,9 @@ static COORD WINAPI (*GetConsoleFontSize) (HANDLE, DWORD);
   static CORE_ADDR cygwin_load_end;
 #   define __USEWIDE
     typedef wchar_t cygwin_buf_t;
-    static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE,
-						LPWSTR, DWORD);
+    typedef DWORD WINAPI (GetModuleFileNameEx_ftype) (HANDLE, HMODULE,
+						      LPWSTR, DWORD);
+    static GetModuleFileNameEx_ftype *GetModuleFileNameEx;
 #   define STARTUPINFO STARTUPINFOW
 #   define CreateProcess CreateProcessW
 #   define GetModuleFileNameEx_name "GetModuleFileNameExW"
@@ -2784,19 +2807,18 @@ _initialize_loadable (void)
 {
   HMODULE hm = NULL;
 
+#define GPA(m, func)					\
+  func = (func ## _ftype *) GetProcAddress (m, #func)
+
   hm = LoadLibrary ("kernel32.dll");
   if (hm)
     {
-      DebugActiveProcessStop = (void *)
-	GetProcAddress (hm, "DebugActiveProcessStop");
-      DebugBreakProcess = (void *)
-	GetProcAddress (hm, "DebugBreakProcess");
-      DebugSetProcessKillOnExit = (void *)
-	GetProcAddress (hm, "DebugSetProcessKillOnExit");
-      GetConsoleFontSize = (void *) 
-	GetProcAddress (hm, "GetConsoleFontSize");
-      GetCurrentConsoleFont = (void *) 
-	GetProcAddress (hm, "GetCurrentConsoleFont");
+      GPA (hm, DebugActiveProcessStop);
+      GPA (hm, DebugBreakProcess);
+      GPA (hm, DebugSetProcessKillOnExit);
+      GPA (hm, GetConsoleFontSize);
+      GPA (hm, DebugActiveProcessStop);
+      GPA (hm, GetCurrentConsoleFont);
     }
 
   /* Set variables to dummy versions of these processes if the function
@@ -2818,12 +2840,9 @@ _initialize_loadable (void)
   hm = LoadLibrary ("psapi.dll");
   if (hm)
     {
-      EnumProcessModules = (void *)
-	GetProcAddress (hm, "EnumProcessModules");
-      GetModuleInformation = (void *)
-	GetProcAddress (hm, "GetModuleInformation");
-      GetModuleFileNameEx = (void *)
-	GetProcAddress (hm, GetModuleFileNameEx_name);
+      GPA (hm, EnumProcessModules);
+      GPA (hm, GetModuleInformation);
+      GPA (hm, GetModuleFileNameEx);
     }
 
   if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
@@ -2843,15 +2862,15 @@ Use \"file\" or \"dll\" command to load executable/libraries directly."));
   hm = LoadLibrary ("advapi32.dll");
   if (hm)
     {
-      OpenProcessToken = (void *) GetProcAddress (hm, "OpenProcessToken");
-      LookupPrivilegeValueA = (void *)
-	GetProcAddress (hm, "LookupPrivilegeValueA");
-      AdjustTokenPrivileges = (void *)
-	GetProcAddress (hm, "AdjustTokenPrivileges");
+      GPA (hm, OpenProcessToken);
+      GPA (hm, LookupPrivilegeValueA);
+      GPA (hm, AdjustTokenPrivileges);
       /* Only need to set one of these since if OpenProcessToken fails nothing
 	 else is needed.  */
       if (!OpenProcessToken || !LookupPrivilegeValueA
 	  || !AdjustTokenPrivileges)
 	OpenProcessToken = bad_OpenProcessToken;
     }
+
+#undef GPA
 }