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| author | Alan Wu <XrXr@users.noreply.github.com> | 2021-10-18 17:01:40 -0400 |
|---|---|---|
| committer | Alan Wu <XrXr@users.noreply.github.com> | 2021-10-20 18:19:43 -0400 |
| commit | b74d6563a665f225f182c4921db68852bbb7e1f1 (patch) | |
| tree | 14a7131d423549cf1ffc661048e7501d5ce5ae24 /internal/variable.h | |
| parent | 2e2430564aa32b68f9e2d99e1f1e273bee3defda (diff) | |
| download | ruby-b74d6563a665f225f182c4921db68852bbb7e1f1.tar.gz | |
Extract yjit_force_iv_index and make it work when object is frozen
In an effort to simplify the logic YJIT generates for accessing instance
variable, YJIT ensures that a given name-to-index mapping exists at
compile time. In the case that the mapping doesn't exist, it was created
by using rb_ivar_set() with Qundef on the sample object we see at
compile time. This hack isn't fine if the sample object happens to be
frozen, in which case YJIT would raise a FrozenError unexpectedly.
To deal with this, make a new function that only reserves the mapping
but doesn't touch the object. This is rb_obj_ensure_iv_index_mapping().
This new function superceeds the functionality of rb_iv_index_tbl_lookup()
so it was removed.
Reported by and includes a test case from John Hawthorn <john@hawthorn.email>
Fixes: GH-282
Diffstat (limited to 'internal/variable.h')
| -rw-r--r-- | internal/variable.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/internal/variable.h b/internal/variable.h index c527bdbd1f..4b67bef907 100644 --- a/internal/variable.h +++ b/internal/variable.h @@ -35,6 +35,7 @@ void rb_gvar_ractor_local(const char *name); static inline bool ROBJ_TRANSIENT_P(VALUE obj); static inline void ROBJ_TRANSIENT_SET(VALUE obj); static inline void ROBJ_TRANSIENT_UNSET(VALUE obj); +uint32_t rb_obj_ensure_iv_index_mapping(VALUE obj, ID id); RUBY_SYMBOL_EXPORT_BEGIN /* variable.c (export) */ |