https://git.ruby-lang.org/ruby.git/commit/?id=2d20e68fb7

From 2d20e68fb716b3867beefd6b59b87a99fbfc256b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@r...>
Date: Tue, 6 Oct 2020 12:18:55 +0900
Subject: include/ruby/memory_view.h: annotate functions


diff --git a/include/ruby/memory_view.h b/include/ruby/memory_view.h
index b88784815..e3897f8 100644
--- a/include/ruby/memory_view.h
+++ b/include/ruby/memory_view.h
@@ -118,9 +118,13 @@ RBIMPL_SYMBOL_EXPORT_BEGIN() https://github.com/ruby/ruby/blob/trunk/include/ruby/memory_view.h#L118
 /* memory_view.c */
 bool rb_memory_view_register(VALUE klass, const rb_memory_view_entry_t *entry);
 
+RBIMPL_ATTR_PURE()
 bool rb_memory_view_is_row_major_contiguous(const rb_memory_view_t *view);
+RBIMPL_ATTR_PURE()
 bool rb_memory_view_is_column_major_contiguous(const rb_memory_view_t *view);
+RBIMPL_ATTR_NOALIAS()
 void rb_memory_view_fill_contiguous_strides(const ssize_t ndim, const ssize_t item_size, const ssize_t *const shape, const bool row_major_p, ssize_t *const strides);
+RBIMPL_ATTR_NOALIAS()
 int rb_memory_view_init_as_byte_array(rb_memory_view_t *view, VALUE obj, void *data, const ssize_t len, const bool readonly);
 ssize_t rb_memory_view_parse_item_format(const char *format,
                                          rb_memory_view_item_component_t **members,
@@ -134,6 +138,7 @@ int rb_memory_view_release(rb_memory_view_t* memory_view); https://github.com/ruby/ruby/blob/trunk/include/ruby/memory_view.h#L138
 
 RBIMPL_SYMBOL_EXPORT_END()
 
+RBIMPL_ATTR_PURE()
 static inline bool
 rb_memory_view_is_contiguous(const rb_memory_view_t *view)
 {
-- 
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