diff options
| author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2023-07-24 23:59:50 +0900 |
|---|---|---|
| committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2023-07-24 23:59:50 +0900 |
| commit | 1faeb44dfcf777ace28321e80d0ebf942161a0a7 (patch) | |
| tree | a4791d2de6e58d5ab69dfa65dfe062711ec3f3f7 /include/ruby/io | |
| parent | 14d154076876a6566b273f0eb3c4a56c681a6b13 (diff) | |
Check if macros are defined before using
Assume macros with the same prefix would be defined together.
Diffstat (limited to 'include/ruby/io')
| -rw-r--r-- | include/ruby/io/buffer.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/ruby/io/buffer.h b/include/ruby/io/buffer.h index 737fafe518..f2ab8f1195 100644 --- a/include/ruby/io/buffer.h +++ b/include/ruby/io/buffer.h @@ -56,13 +56,13 @@ enum rb_io_buffer_endian { RB_IO_BUFFER_LITTLE_ENDIAN = 4, RB_IO_BUFFER_BIG_ENDIAN = 8, -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ +#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_LITTLE_ENDIAN, -#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_BIG_ENDIAN, -#elif REG_DWORD == REG_DWORD_LITTLE_ENDIAN +#elif defined(REG_DWORD) && REG_DWORD == REG_DWORD_LITTLE_ENDIAN RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_LITTLE_ENDIAN, -#elif REG_DWORD == REG_DWORD_BIG_ENDIAN +#elif defined(REG_DWORD) && REG_DWORD == REG_DWORD_BIG_ENDIAN RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_BIG_ENDIAN, #endif |