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[SDK][INCLUDE] Fix offsetof and CCSIZEOF_STRUCT for Clang-CL build (#3624)

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Clang-CL was failing with "error: function declaration cannot have variably modified type". This PR will fix the Clang-CL build. CORE-17547
This commit is contained in:
Katayama Hirofumi MZ 2021-04-25 13:38:22 +09:00 committed by GitHub
parent 8bf471105e
commit 66f6abfc4a
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 19 additions and 3 deletions
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18
sdk/include/crt/stddef.h
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@ -377,10 +377,22 @@ typedef __WCHAR_TYPE__ wchar_t;
#ifndef offsetof
/* Offset of member MEMBER in a struct of type TYPE. */
#if defined(__GNUC__)
#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
#if defined(__GNUC__) || defined(__clang__) || defined(_CRT_USE_BUILTIN_OFFSETOF)
# define offsetof(TYPE,MEMBER) __builtin_offsetof(TYPE,MEMBER)
#else
#define offsetof(TYPE, MEMBER) ((size_t)&(((TYPE *)0)->MEMBER))
# ifdef __cplusplus
# ifdef _WIN64
# define offsetof(TYPE,MEMBER) ((::size_t)(ptrdiff_t)&reinterpret_cast<const volatile char&>((((TYPE*)0)->MEMBER)))
# else
# define offsetof(TYPE,MEMBER) ((::size_t)&reinterpret_cast<const volatile char&>((((TYPE*)0)->MEMBER)))
# endif
# else
# ifdef _WIN64
# define offsetof(TYPE,MEMBER) ((size_t)(ptrdiff_t)&(((TYPE*)0)->MEMBER))
# else
# define offsetof(TYPE,MEMBER) ((size_t)&(((TYPE*)0)->MEMBER))
# endif
# endif
#endif
#endif /* !offsetof */

4
sdk/include/psdk/commctrl.h
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@ -147,7 +147,11 @@ extern "C" {
#define NM_THEMECHANGED (NM_FIRST-22)
#ifndef CCSIZEOF_STRUCT
#if defined(__clang__) /* Clang-CL fails without this workaround. See CORE-17547 */
#define CCSIZEOF_STRUCT(structname,member) (__builtin_offsetof(structname,member) + sizeof(((structname*)0)->member))
#else
#define CCSIZEOF_STRUCT(structname,member) (((int)((LPBYTE)(&((structname*)0)->member) - ((LPBYTE)((structname*)0))))+sizeof(((structname*)0)->member))
#endif
#endif
typedef struct tagNMTOOLTIPSCREATED {