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| author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2022-10-19 18:45:26 +0900 |
|---|---|---|
| committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2022-10-19 22:55:42 +0900 |
| commit | 412e3c7a8db275567eaceece6c48dde3aedf2ae6 (patch) | |
| tree | c67ba76d040fb1b7a312165b99f5b95300d797b5 /include | |
| parent | 86096a91d55f72620e0f8ca8634da5fa342dc35b (diff) | |
Assert for RTEST that Qnil and Qfalse differ just 1 bit
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/6589
Diffstat (limited to 'include')
| -rw-r--r-- | include/ruby/internal/special_consts.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/ruby/internal/special_consts.h b/include/ruby/internal/special_consts.h index 38934e4da3..70276278eb 100644 --- a/include/ruby/internal/special_consts.h +++ b/include/ruby/internal/special_consts.h @@ -136,6 +136,7 @@ static inline bool RB_TEST(VALUE obj) { /* + * if USE_FLONUM * Qfalse: ....0000 0000 * Qnil: ....0000 1000 * ~Qnil: ....1111 0111 @@ -143,6 +144,14 @@ RB_TEST(VALUE obj) * ---------------------------- * RTEST(v) ....xxxx 0xxx * + * if ! USE_FLONUM + * Qfalse: ....0000 0000 + * Qnil: ....0000 0100 + * ~Qnil: ....1111 1011 + * v ....xxxx xxxx + * ---------------------------- + * RTEST(v) ....xxxx x0xx + * * RTEST(v) can be 0 if and only if (v == Qfalse || v == Qnil). */ return obj & ~RUBY_Qnil; |