From 1faeb44dfcf777ace28321e80d0ebf942161a0a7 Mon Sep 17 00:00:00 2001 From: Nobuyoshi Nakada Date: Mon, 24 Jul 2023 23:59:50 +0900 Subject: [PATCH] Check if macros are defined before using Assume macros with the same prefix would be defined together. --- include/ruby/io/buffer.h | 8 ++++---- 1 file 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