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2015-11-09variable.c (rb_autoload_load): allow recursive callsnormal
* variable.c (rb_autoload_load): allow recursive calls [ruby-core:71345] [Bug #11658] * test/ruby/test_autoload.rb (test_autoload_while_autoloading): new test by: Hiroshi Shirosaki <h.shirosaki@gmail.com> [ruby-core:71390] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52511 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-11-04variable.c: suppress a warningnobu
* variable.c (autoload_reset): initialize formally to suppress a warning from container_off_var() by Visual C. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52446 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-11-02variable.c: remove casts for rb_class_ivar_set callersnormal
Casting any arguments of rb_class_ivar_set to st_data_t is wrong as the function does not take any st_data_t parameters anymore. There's no functional change, as ID, VALUE, and st_data_t are all the same type, but this reduces confusion and improves maintainability for future type changes. * variable.c (find_class_path): remove cast for rb_class_ivar_set (rb_ivar_set): ditto (rb_cvar_set): ditto git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52427 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-11-02variable.c (rb_global_tbl): convert to id_tablenormal
Mainly this is to reduce casting a tiny amount; and probably nothing depends on the order of globals. Likely no measurable memory usage improvement as globals are not common, but maybe some weird code out there benefits. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52426 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-31use rb_source_loc and rb_source_locationnobu
* error.c, eval.c, eval_error.c, gc.c, variable.c, vm.c, vm_eval.c, vm_trace.c: use rb_source_loc/rb_source_location instead of combination of rb_sourcefile/rb_sourcefilename and rb_sourceline. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52398 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-30variable.c: rb_class_ivar_setnobu
* variable.c (rb_class_ivar_set): rename as class specific ivar setter, and st_table is no longer involved. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52380 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-30variable.c (generic_ivar_remove): return original valuenormal
This fixes a bug introduced in r50678 ("variable.c: use indices for generic ivars") and does not affect any released version of Ruby * variable.c (generic_ivar_remove): adjust type, set valp (rb_obj_remove_instance_variable): simplify call * test/ruby/test_object.rb (test_remove_instance_variable): expand for implementation details git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52378 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-30variable.c (rb_st_insert_id_and_value): reduce argsnormal
Minor simplification; this will hopefully make future patches for switching to id_table easier-to-review. * internal.h (rb_st_insert_id_and_value): update prototype * variable.c (rb_st_insert_id_and_value): reduce args (find_class_path): adjust call for less args (rb_ivar_set): ditto (rb_cvar_set): ditto * class.c (rb_singleton_class_attached): ditto git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52374 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-29variable.c: reduce heap usage for autoload_data_inormal
For the loader (first thread which hits autoload, it is wasteful to have extra elements on the stack. For the lifetime of the process, it is wasteful to waste 2 words for every autoload entry. So this makes full use of existing stack overhead while reducing heap overhead for long-lived autoload_data_i structs. * variable.c (struct autoload_state): usable as wait-queue head (struct autoload_data_i): remove 2 words of overhead (autoload_i_mark): remove marking for thread (autoload_reset): adjust for struct changes (rb_autoload): ditto (rb_autoloading_value): ditto (rb_autoload_load): ditto (const_update): ditto git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52335 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-28variable.c: additional locking around autoloadnormal
[ruby-core:70075] [ruby-core:71239] [Bug #11384] Note: this open-coding locking method may go into rb_mutex/rb_thread_shield types. It is smaller and simpler and based on the wait queue implementation of the Linux kernel. When/if we get rid of GVL, native mutexes may be used as-is. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52332 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-28error.c: receiver in NameErrornobu
* error.c (rb_name_err_new): store the receiver directly. * error.c (name_err_receiver): return directly stored receiver. [Feature #10881] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52322 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-10-28NameError#receiver of uninitialized constantnobu
* error.c (name_err_mesg_to_str): quote the name if unprintable. * object.c (check_setter_id): use rb_check_id to convert names. * variable.c (uninitialized_constant): use NameError::message to keep the receiver of uninitialized constant. [Feature #10881] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52321 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-09-16variable.c: fail if frozennobu
* variable.c (set_const_visibility): fail if the class/module is frozen. [ruby-core:70828] [Bug #11532] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51881 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-08-04variable.c: wrap long linesnormal
Make code easier to read and hunt for bugs with my tiny terminal. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51479 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-07-30variable.c: Module#deprecate_constantnobu
* variable.c (rb_const_get_0): warn deprecated constant reference. * variable.c (rb_mod_deprecate_constant): mark constants to be warned as deprecated. [Feature #11398] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-06-24variable.c: remove FL_ABLE check for generic ivarsnormal
Missed this in r50758. * variable.c (generic_ivar_set): remove FL_ABLE check (gen_ivar_copy): ditto [ruby-core:69715] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51005 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-06-03variable.c: remove generic ivar support for special constantsnormal
Special constants are all frozen since [Feature #8923] and cannot support ivars. Remove some unused code we had for supporting them. * variable.c (special_generic_ivar): remove flag (givar_i, rb_mark_generic_ivar_tbl): remove functions (rb_free_generic_ivar, rb_ivar_lookup, rb_ivar_delete, generic_ivar_set, rb_ivar_set, rb_ivar_defined, rb_copy_generic_ivar, rb_ivar_foreach, rb_ivar_count, rb_obj_remove_instance_variable): adjust for lack of ivar support in special constants * test/ruby/test_variable.rb: test ivars for special consts * internal.h: remove rb_mark_generic_ivar_tbl decl * gc.c (gc_mark_roots): remove rb_mark_generic_ivar_tbl call git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50758 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-05-30variable.c: avoid compatibility table with generic ivarsnormal
This recovers and improves performance of Marshal.dump/load on Time objects compared to when we implemented generic ivars entirely using st_table. This also recovers some performance on other generic ivar objects, but does not bring bring Marshal.dump/load performance up to previous speeds. benchmark results: minimum results in each 10 measurements. Execution time (sec) name trunk geniv after marshal_dump_flo 0.343 0.334 0.335 marshal_dump_load_geniv 0.487 0.527 0.495 marshal_dump_load_time 1.262 1.401 1.257 Speedup ratio: compare with the result of `trunk' (greater is better) name geniv after marshal_dump_flo 1.026 1.023 marshal_dump_load_geniv 0.925 0.985 marshal_dump_load_time 0.901 1.004 * include/ruby/intern.h (rb_generic_ivar_table): deprecate * internal.h (rb_attr_delete): declare * marshal.c (has_ivars): use rb_ivar_foreach (w_ivar): ditto (w_object): update for new interface * time.c (time_mload): use rb_attr_delete * variable.c (generic_ivar_delete): implement (rb_ivar_delete): ditto (rb_attr_delete): ditto [ruby-core:69323] [Feature #11170] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50680 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-05-29variable.c: use indices for generic ivarsnormal
This reduces memory overhead of ivars for common types such as T_DATA the same way T_OBJECT does it. For 9992 accepted clients on an OpenSSL server, this reduces memory from 77160K to 69248K with the script in https://bugs.ruby-lang.org/issues/11170 * variable.c (static int special_generic_ivar): move (rb_generic_ivar_table): rewrite for compatibility (gen_ivtbl_bytes): new function (generic_ivar_get): update to use ivar index (generic_ivar_update): ditto (generic_ivar_set): ditto (generic_ivar_defined): ditto (generic_ivar_remove): ditto (rb_mark_generic_ivar): ditto (givar_i): ditto (rb_free_generic_ivar): ditto (rb_mark_generic_ivar_tbl): ditto (rb_generic_ivar_memsize): ditto (rb_copy_generic_ivar): ditto (rb_ivar_set): ditto (rb_ivar_foreach): ditto (rb_ivar_count): ditto (givar_mark_i): remove (gen_ivtbl_mark): new function (gen_ivar_each): ditto (iv_index_tbl_extend): update for struct ivar_update (iv_index_tbl_newsize): ditto [ruby-core:69323] [Feature #11170] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50678 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-05-29variable.c: extract common functions for generic ivar indicesnormal
* variable.c (iv_index_tbl_make): extract from rb_ivar_set (iv_index_tbl_extend): ditto (iv_index_tbl_newsize): ditto (rb_ivar_set): use extracted functions [ruby-core:69323] (Part 1) git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50676 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-05-21variable.c: generic_iv_tbl is unavoidablenormal
Even miniruby creates one generic ivar (plain "ruby" creates 9), so there's no point in lazily allocating the table. I dumped generic ivar counts with the following trivial patch: --- a/variable.c +++ b/variable.c @@ -24,6 +24,10 @@ static void check_before_mod_set(VALUE, ID, VALUE, const char *); static void setup_const_entry(rb_const_entry_t *, VALUE, VALUE, rb_const_flag_t); static int const_update(st_data_t *, st_data_t *, st_data_t, int); static st_table *generic_iv_tbl; +__attribute__((destructor)) static void count_genivar(void) +{ + fprintf(stderr, "genivars: %zu\n", (size_t)generic_iv_tbl->num_entries); +} void Init_var_tables(void) * variable.c (Init_var_tables): init generic_iv_tbl (rb_generic_ivar_table, generic_ivar_get, generic_ivar_set, generic_ivar_defined, generic_ivar_remove, rb_mark_generic_ivar, givar_i, rb_mark_generic_ivar_tbl, rb_free_generic_ivar, rb_copy_generic_ivar, rb_ivar_foreach, rb_ivar_count): remove checks for uninitialize generic_iv_tbl [ruby-core:69155] [Feature #11146] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50569 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-05-16allocate structs with wrappernobu
* parse.y (rb_parser_new, ripper_s_allocate): allocate structs with making new wrapper objects and get rid of potential memory leak. * variable.c (rb_autoload): ditto. * ext/digest/digest.c (rb_digest_base_alloc): ditto. * ext/strscan/strscan.c (strscan_s_allocate): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50511 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-05-14* variable.c: Change autoload to call `require` through Ruby rathertenderlove
than directly calling `rb_require_safe`. This allows things like RubyGems to intercept file loading done though `autoload`. [Feature #11140] * test/ruby/test_autoload.rb: Test for change. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-05-13variable.c: no intermediate IDsnobu
* variable.c (rb_set_class_path_string, rb_set_class_path): get rid of creating intermediate IDs. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50488 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-04-13variable.c: const_updatenobu
* variable.c (autoload_delete): no longer delete const entry itself. * variable.c (autoload_const_set, rb_const_set): update const entry instead of adding after removal. * variable.c (const_update): extract from rb_const_set. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50288 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-04-13variable.c: setup_const_entrynobu
* variable.c (setup_const_entry): extract rb_const_entry_t setup from rb_const_set. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50287 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-04-13variable.c: ensurenobu
* variable.c (rb_autoload_load): prefer rb_ensure than rb_protect for rollback. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50286 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-22variable.c: escape erred namenobu
* variable.c (rb_path_to_class): escape erred name. as precision delimits the formatted result only, not region of an argument string, need to make a substring for the particular region. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50056 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-12* internal.h, node.h: move a definition of `struct rb_global_entry'ko1
and related functions from node.h to internal.h. * variable.c: remove unused include pragma. * common.mk: remove unused dependency. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49947 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-02-28variable.c: rb_search_class_pathnobu
* variable.c (rb_tmp_class_path): defer making temporary class path string. * variable.c (rb_search_class_path): search class path or return Qnil or Qfalse if unnamed, not creating a temporary path. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49779 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-02-28variable.c: preserve name encoding of subclassnobu
* variable.c (rb_tmp_class_path): preserve name encoding of an anonymous instance of module/class subclass. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49778 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-02-06revert r45487nobu
* variable.c (rb_alias_variable): IDs are always immportal now, no pin down is needed. * vm_method.c (rb_method_entry_make): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49520 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-02-06variable.c: ignore mortal classidnobu
* variable.c (classname): ignore classid if it is a mortal symbol. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49519 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-12-01use 0 for reservednobu
use 0 for rb_data_type_t::reserved instead of NULL, since its type may be changed in the future and possibly not a pointer type. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48662 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-11-21get rid of inadvertent ID creationnobu
* object.c (rb_mod_const_get, rb_mod_const_defined): ditto. * variable.c (rb_const_missing, rb_mod_const_missing): call const_missing without new ID to get rid of inadvertent ID creation. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48533 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-11-15* internal.h: Include ruby.h and ruby/encoding.h to beakr
includable without prior inclusion. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48447 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-10-19variable.c, vm_insnhelper.c: improve performancenobu
* variable.c (rb_ivar_get), vm_insnhelper.c (vm_getivar): improve instance variable retrieval performance by checking ruby_verbose before call of rb_warning and evaluation of its argument. [ruby-core:65786] [Feature #10396] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48035 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-10-08variable.c: use st_updatenobu
* variable.c (generic_ivar_set): use st_update to insert object which does not have generic instance variables yet. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47849 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-10-08variable.c: use st_updatenobu
* variable.c (sv_i, cv_i): use st_update to insert non-existing entries. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47847 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-10-08constant.h: constant visibilitiesnobu
* constant.h (RB_CONST_PRIVATE_P, RB_CONST_PUBLIC_P): macros to predicate constant visibilities. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47846 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-09-13simplify some trivial rb_data_type_t callbacksnormal
* process.c (free_exec_arg): remove (memsize_exec_arg): ptr is never NULL (exec_arg_data_type): use RUBY_TYPED_DEFAULT_FREE * variable.c (autoload_i_free): remove (autoload_data_i_type): use RUBY_TYPED_DEFAULT_FREE (autoload_memsize): ptr is never NULL * vm_backtrace.c (location_free): remove (location_mark): ptr is never NULL (location_data_type): use RUBY_TYPED_DEFAULT_FREE (backtrace_mark): ditto (backtrace_free): ditto git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47572 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-09-10variable.c (rb_ivar_set): remove unnecessary checknormal
r47512 contains the proper fix git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47517 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-09-10variable.c: check index overflownobu
* variable.c (rb_ivar_set), vm_insnhelper.c (vm_setivar): check instance variable index overflow. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47512 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-09-10rb_call_info_t: shrink to 96 bytes from 104 bytes on 64-bitnormal
This keeps ci->flag and ci->aux.index consistent across 32-bit and 64-bit platforms. ci->flag: VM_CALL_* flags only use 9 bits, currently ci->aux.index: 2 billion ivars per class should be enough for anybody This saves around 50K allocations on "valgrind ruby -e exit" on x86-64 before: total heap usage: 48,122 allocs, 19,253 frees, 8,099,197 bytes allocated after: total heap usage: 48,069 allocs, 19,214 frees, 8,047,266 bytes allocated * vm_core.h (rb_call_info_t): ci->flag becomes 32-bit unsigned int ci->index becomes a 32-bit signed int (from signed long). Reorder for better packing on 64-bit, giving an 8 byte reduction from 104 to 96 bytes for each ci. * compile.c (new_callinfo, setup_args, iseq_compile_each, iseq_build_from_ary_body): adjust for type changes * vm_insnhelper.c (vm_getivar): ditto git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47509 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-08-04variable: cleanup to use rb_const_lookupnormal
* variable.c: cleanup to use rb_const_lookup * vm_insnshelper.c: ditto This reduces casting and long lines. This should make it easier to switch to alternatives to st for constant storage. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47059 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-07-25introduce ZALLOC{,_N} to replace ALLOC{,_N}+MEMZERO usenormal
Using calloc where possible reduces code and binary sizes. * include/ruby/ruby.h (ZALLOC, ZALLOC_N): implement (Data_Make_Struct, TypedData_Make_Struct): ZALLOC replaces ALLOC+memset * compile.c (iseq_seq_sequence): ZALLOC_N replaces ALLOC_N+MEMZERO * cont.c (fiber_t_alloc): ZALLOC replaces ALLOC+MEMZERO * io.c (rb_io_reopen): ditto * iseq.c (prepare_iseq_build): ditto * parse.y (new_args_tail_gen, parser_new, ripper_s_allocate): ditto * re.c (match_alloc): ditto * variable.c (rb_const_set): ditto * ext/socket/raddrinfo.c (get_addrinfo): ditto * ext/strscan/strscan.c (strscan_s_allocate): ditto * gc.c (rb_objspace_alloc): calloc replaces malloc+MEMZERO git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-07-09* parse.y: change Symbol <-> ID relationship to avoidko1
exposing IDs from collectable symbols. [Bug #10014] Now, rb_check_id() returns 0 if corresponding symbol is pinned dynamic symbol. There is remaining intern_cstr_without_pindown(), it can return IDs from collectable symbols. We must be careful to use it (only used in parse.y). I think it should be removed if it does not have impact for performance. * parse.y: add: * STATIC_SYM2ID() * STATIC_ID2SYM() rename: * rb_pin_dynamic_symbol() -> dsymbol_pindown() * internal.h: remove: * rb_check_id_without_pindown() * rb_sym2id_without_pindown() add: * rb_check_symbol() * rb_check_symbol_cstr() * load.c: use rb_check_id() or rb_check_id_cstr(). * object.c: ditto. * struct.c: ditto. * thread.c: ditto. * vm_method.c: ditto. * string.c (sym_find): use only rb_check_symbol(). * sprintf.c (rb_str_format): use rb_check_symbol_cstr(). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46764 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-07-03Init functions don't need ID cachesnobu
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46663 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-06-18constify parametersnobu
* include/ruby/intern.h: constify `argv` parameters. * include/ruby/ruby.h: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46459 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-03-31variable.c, vm_method.c: pin downnobu
* variable.c (rb_alias_variable): ensure pinned down. * vm_method.c (rb_method_entry_make): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45487 b2dd03c8-39d4-4d8f-98ff-823fe69b080e