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tuklib_physmem: Silence warning from -Wcast-function-type on MinGW-w64.

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tuklib_physmem depends on GetProcAddress() for both MSVC and MinGW-w64
to retrieve a function address. The proper way to do this is to cast the
return value to the type of function pointer retrieved. Unfortunately,
this causes a cast-function-type warning, so the best solution is to
simply ignore the warning.
This commit is contained in:
Jia Tan 2023-01-19 20:35:09 +08:00 committed by Lasse Collin
parent 6c9a2c2e46
commit 8daaac8e10
1 changed files with 18 additions and 0 deletions
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18
src/common/tuklib_physmem.c
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@ -73,6 +73,17 @@
#endif
// With GCC >= 8.1 with -Wextra and Clang >= 13 with -Wcast-function-type
// will warn about the Windows-specific code.
#if defined(__has_warning)
# if __has_warning("-Wcast-function-type")
# define CAN_DISABLE_WCAST_FUNCTION_TYPE 1
# endif
#elif TUKLIB_GNUC_REQ(8,1)
# define CAN_DISABLE_WCAST_FUNCTION_TYPE 1
#endif
extern uint64_t
tuklib_physmem(void)
{
@ -87,8 +98,15 @@ tuklib_physmem(void)
HMODULE kernel32 = GetModuleHandle(TEXT("kernel32.dll"));
if (kernel32 != NULL) {
typedef BOOL (WINAPI *gmse_type)(LPMEMORYSTATUSEX);
#ifdef CAN_DISABLE_WCAST_FUNCTION_TYPE
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wcast-function-type"
#endif
gmse_type gmse = (gmse_type)GetProcAddress(
kernel32, "GlobalMemoryStatusEx");
#ifdef CAN_DISABLE_WCAST_FUNCTION_TYPE
# pragma GCC diagnostic pop
#endif
if (gmse != NULL) {
MEMORYSTATUSEX meminfo;
meminfo.dwLength = sizeof(meminfo);