merge revision(s) a55eb9a2af7950d180d9d31ffde2bce66710f44f: [Backport #17572]

	Make reciprocal properly of non-integral rational [Bug #17572]

	---
	 rational.c                 | 2 +-
	 test/ruby/test_rational.rb | 7 +++++++
	 2 files changed, 8 insertions(+), 1 deletion(-)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67926 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 9 insertions, 2 deletions

diff --git a/rational.c b/rational.c
index 435a68f421..1038059e4f 100644
--- a/rational.c
+++ b/rational.c
@@ -1865,7 +1865,7 @@ VALUE
 rb_rational_reciprocal(VALUE x)
 {
     get_dat1(x);
-    return f_rational_new_no_reduce2(CLASS_OF(x), dat->den, dat->num);
+    return nurat_convert(CLASS_OF(x), dat->den, dat->num, FALSE);
 }
 
 /*
diff --git a/test/ruby/test_rational.rb b/test/ruby/test_rational.rb
index a8cdf22a49..2957e1bfc8 100644
--- a/test/ruby/test_rational.rb
+++ b/test/ruby/test_rational.rb
@@ -598,6 +598,13 @@ class Rational_Test < Test::Unit::TestCase
     assert_nothing_raised(TypeError, '[Bug #5020] [ruby-dev:44088]') do
       Rational(1,2).coerce(Complex(1,1))
     end
+
+    assert_raise(ZeroDivisionError) do
+      1 / 0r.coerce(0+0i)[0]
+    end
+    assert_raise(ZeroDivisionError) do
+      1 / 0r.coerce(0.0+0i)[0]
+    end
   end
 
   class ObjectX
diff --git a/version.h b/version.h
index 64b9bbc88e..ca6cbc67d2 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.6.7"
 #define RUBY_RELEASE_DATE "2021-04-05"
-#define RUBY_PATCHLEVEL 185
+#define RUBY_PATCHLEVEL 186
 
 #define RUBY_RELEASE_YEAR 2021
 #define RUBY_RELEASE_MONTH 4