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tuklib_physmem: Clean up the way -Wcast-function-type is silenced on Windows.

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__has_warning and other __has_foo macros are meant to become
compiler-agnostic so it's not good to check for __clang__ with it.

This also relied on tuklib_common.h for #defining __has_warning
which was confusing as #defining reserved macros is generally
not a good idea.
This commit is contained in:
Lasse Collin 2023-01-23 23:38:34 +02:00 committed by Jia Tan
parent 683a3c7e2f
commit 8366cf8738
1 changed files with 13 additions and 4 deletions
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17
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 TUKLIB_GNUC_REQ(8,1)
# define CAN_DISABLE_WCAST_FUNCTION_TYPE 1
#elif defined(__has_warning)
# if __has_warning("-Wcast-function-type")
# define CAN_DISABLE_WCAST_FUNCTION_TYPE 1
# endif
#endif
extern uint64_t
tuklib_physmem(void)
{
@ -87,15 +98,13 @@ tuklib_physmem(void)
HMODULE kernel32 = GetModuleHandle(TEXT("kernel32.dll"));
if (kernel32 != NULL) {
typedef BOOL (WINAPI *gmse_type)(LPMEMORYSTATUSEX);
#if TUKLIB_GNUC_REQ(8,1) || (defined(__clang__) \
&& __has_warning("-Wcast-function-type"))
#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");
#if TUKLIB_GNUC_REQ(8,1) || (defined(__clang__) \
&& __has_warning("-Wcast-function-type"))
#ifdef CAN_DISABLE_WCAST_FUNCTION_TYPE
# pragma GCC diagnostic pop
#endif
if (gmse != NULL) {