This particular case was discussed already
/tiano/edk2/MdeModulePkg/Core/Dxe/Mem/Pool.c:188:49: error: comparison of
constant 2147483647 with expression of type 'EFI_MEMORY_TYPE' is always
true [-Werror,-Wtautological-constant-out-of-range-compare]
if ((PoolType >= EfiMaxMemoryType && PoolType <= 0x7fffffff) ||
~~~~~~~~ ^ ~~~~~~~~~~
/tiano/edk2/MdeModulePkg/Core/Dxe/Mem/Page.c:528:40: error: comparison of
constant 2147483647 with expression of type 'EFI_MEMORY_TYPE' is always
true [-Werror,-Wtautological-constant-out-of-range-compare]
if (Type >= EfiMaxMemoryType && Type <= 0x7fffffff) {
~~~~ ^ ~~~~~~~~~~
.................
"i686-pc-mingw32-objcopy" --redefine-sym _memcpy=_CopyMem --redefine-sym
_memset=_SetMem
/tiano/edk2/Build/DuetPkgIA32/DEBUG_PECLANG/IA32/MdeModulePkg/Core/Dxe/DxeMain/OUTPUT/Mem/Pool.obj
/tiano/edk2/MdeModulePkg/Core/Dxe/Mem/Page.c:1101:53: error: comparison of
constant 2147483647 with expression of type 'EFI_MEMORY_TYPE' is always
true [-Werror,-Wtautological-constant-out-of-range-compare]
if ((MemoryType >= EfiMaxMemoryType && MemoryType <= 0x7fffffff) ||
~~~~~~~~~~ ^ ~~~~~~~~~~
I guess it should be written like this
if ((PoolType >= EfiMaxMemoryType && ((UINT32)PoolType <= 0x7fffffff)) ...
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