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MdePkg: Update Base.h to be compliant with C11 

With the introduction of the use of _Static_assert, edk2 requires a C11
compatible compiler. Update Include/Base.h to be compliant with C11.

As of C11, the maximum type of an enum is type `int`. Since the UEFI
Specification 2.3.1 Errata C allows either `int` or `unsigned int`, fix
the 32-bit enum check to use a signed int.

Since the UEFI 2.3 Specification only allowed signed int, update the
comment to reference 2.3.1 Errata C where the change was made to allow
unsigned int.

Signed-off-by: Rebecca Cran <rebecca@quicinc.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Rebecca Cran 2023-02-09 07:24:16 -07:00 committed by mergify[bot]
parent 410ca0ff94
commit d6107c593b
1 changed files with 6 additions and 6 deletions
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12
MdePkg/Include/Base.h
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@ -796,9 +796,9 @@ STATIC_ASSERT (sizeof (L"A") == 4, "sizeof (L\"A\") does not meet UEFI Specif
//
// The following three enum types are used to verify that the compiler
// configuration for enum types is compliant with Section 2.3.1 of the
// UEFI 2.3 Specification. These enum types and enum values are not
// intended to be used. A prefix of '__' is used avoid conflicts with
// other types.
// UEFI 2.3.1 Errata C Specification. These enum types and enum values
// are not intended to be used. A prefix of '__' is used avoid
// conflicts with other types.
//
typedef enum {
__VerifyUint8EnumValue = 0xff
@ -809,12 +809,12 @@ typedef enum {
} __VERIFY_UINT16_ENUM_SIZE;
typedef enum {
__VerifyUint32EnumValue = 0xffffffff
} __VERIFY_UINT32_ENUM_SIZE;
__VerifyInt32EnumValue = 0x7fffffff
} __VERIFY_INT32_ENUM_SIZE;
STATIC_ASSERT (sizeof (__VERIFY_UINT8_ENUM_SIZE) == 4, "Size of enum does not meet UEFI Specification Data Type requirements");
STATIC_ASSERT (sizeof (__VERIFY_UINT16_ENUM_SIZE) == 4, "Size of enum does not meet UEFI Specification Data Type requirements");
STATIC_ASSERT (sizeof (__VERIFY_UINT32_ENUM_SIZE) == 4, "Size of enum does not meet UEFI Specification Data Type requirements");
STATIC_ASSERT (sizeof (__VERIFY_INT32_ENUM_SIZE) == 4, "Size of enum does not meet UEFI Specification Data Type requirements");
/**
Macro that returns a pointer to the data structure that contains a specified field of