diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/ruby/ruby.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h index dbea8e4c67..539c1b3f63 100644 --- a/include/ruby/ruby.h +++ b/include/ruby/ruby.h @@ -564,11 +564,24 @@ int ruby_safe_level_4_warning(void) __attribute__((warning("$SAFE=4 is obsolete" # ifdef RUBY_EXPORT # define ruby_safe_level_4_warning() ruby_safe_level_4_error() # endif -#define RUBY_SAFE_LEVEL_INVALID_P(level) \ +#if defined(HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR_CONSTANT_P) +# define RUBY_SAFE_LEVEL_INVALID_P(level) \ + __extension__(\ + __builtin_choose_expr(\ + __builtin_constant_p(level), \ + ((level) < 0 || RUBY_SAFE_LEVEL_MAX < (level)), 0)) +# define RUBY_SAFE_LEVEL_CHECK(level, type) \ + __extension__(__builtin_choose_expr(RUBY_SAFE_LEVEL_INVALID_P(level), ruby_safe_level_4_##type(), (level))) +#else +/* in gcc 4.8 or earlier, __builtin_choose_expr() does not consider + * __builtin_constant_p(variable) a constant expression. + */ +# define RUBY_SAFE_LEVEL_INVALID_P(level) \ __extension__(__builtin_constant_p(level) && \ ((level) < 0 || RUBY_SAFE_LEVEL_MAX < (level))) -#define RUBY_SAFE_LEVEL_CHECK(level, type) \ - __extension__(__builtin_choose_expr(RUBY_SAFE_LEVEL_INVALID_P(level), ruby_safe_level_4_##type(), (level))) +# define RUBY_SAFE_LEVEL_CHECK(level, type) \ + (RUBY_SAFE_LEVEL_INVALID_P(level) ? ruby_safe_level_4_##type() : (level)) +#endif #define rb_secure(level) rb_secure(RUBY_SAFE_LEVEL_CHECK(level, warning)) #define rb_set_safe_level(level) rb_set_safe_level(RUBY_SAFE_LEVEL_CHECK(level, error)) #endif |