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概要[]
- gcc-4.1.0/gcc/hwint.hにて定義
- gcc-4.1.0/gcc/configure, gcc-4.1.0/fastjar/configureでは別の定義がされている
- long long型が何バイトか(何char分か)を表す
実装[]
24 /* If HAVE_LONG_LONG and SIZEOF_LONG_LONG aren't defined, but
25 GCC_VERSION >= 3000, assume this is the second or later stage of a
26 bootstrap, we do have long long, and it's 64 bits. (This is
27 required by C99; we do have some ports that violate that assumption
28 but they're all cross-compile-only.) Just in case, force a
29 constraint violation if that assumption is incorrect. */
30 #if !defined HAVE_LONG_LONG
31 # if GCC_VERSION >= 3000
&color(Silver){32 # define HAVE_LONG_LONG 1};
33 # define SIZEOF_LONG_LONG 8
&color(Silver){34 extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];};
35 # endif
36 #endif