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vm.c: generalize pre-dispatch argument count check for C methods

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Replace check_method_noarg() with check_argument_count() that validates
min <= argc <= max using the full aspec stored in mrb_method_t.flags.
This catches ArgumentError earlier at dispatch time, before entering
the C function.

The old check only handled the special case of aspec==0 (NOARG).
The new check extracts REQ, OPT, REST, POST, KEY, and KDICT from
the aspec and validates accordingly. Keyword hash is counted as
a positional arg only when the method doesn't accept keywords.

Remove MRB_METHOD_NOARG_P macro from proc.h (subsumed by aspec check).
Fix 15 incorrect aspec declarations across the codebase that were
exposed by the stricter enforcement.

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
2026-02-20 14:25:48 +09:00
parent 4a097525df
commit b460554d33
14 changed files with 42 additions and 39 deletions
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mrbgems/mruby-task/src/task.c
+1 -1
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@@ -1530,7 +1530,7 @@ mrb_mruby_task_gem_init(mrb_state *mrb)
MRB_SET_INSTANCE_TT(task_class, MRB_TT_DATA);
/* Class methods */
mrb_define_class_method_id(mrb, task_class, MRB_SYM(new), mrb_task_s_new, MRB_ARGS_BLOCK());
mrb_define_class_method_id(mrb, task_class, MRB_SYM(new), mrb_task_s_new, MRB_ARGS_KEY(2,0)|MRB_ARGS_BLOCK());
mrb_define_class_method_id(mrb, task_class, MRB_SYM(current), mrb_task_s_current, MRB_ARGS_NONE());
mrb_define_class_method_id(mrb, task_class, MRB_SYM(list), mrb_task_s_list, MRB_ARGS_NONE());
mrb_define_class_method_id(mrb, task_class, MRB_SYM(pass), mrb_task_s_pass, MRB_ARGS_NONE());