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fix RSTRUCT_LEN macro in public C API

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rb_struct_size returns an Integer VALUE, so it must be converted
to a `long` for compatibility with previous Ruby C API versions.

* ext/-test-/struct/len.c: new
* test/-ext-/struct/test_len.rb: new
* include/ruby/ruby.h (RSTRUCT_LEN): use NUM2LONG
  [ruby-core:80692] [Bug #13439]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58359 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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normal 2017-04-15 00:46:00 +00:00
parent f687a147eb
commit 8e64799c96
3 changed files with 24 additions and 1 deletions
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10
test/-ext-/struct/test_len.rb Normal file
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@ -0,0 +1,10 @@
# frozen_string_literal: false
require 'test/unit'
require "-test-/struct"
class Bug::Struct::Test_Len < Test::Unit::TestCase
def test_rstruct_len
klass = Bug::Struct.new(:a, :b, :c)
assert_equal 3, klass.new.rstruct_len
end
end