merge revision(s) 66796,66797: [Backport #15525]

	No TypeError at nil if exception: false

	[ruby-core:91021] [Bug #15525]

	No FloatDomainError at non-finitive number if exception: false

	[ruby-core:91021] [Bug #15525]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@66862 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/complex.c b/complex.c
index ab50daabaf..cc798cccca 100644
--- a/complex.c
+++ b/complex.c
@@ -1939,8 +1939,10 @@ to_complex(VALUE val)
 static VALUE
 nucomp_convert(VALUE klass, VALUE a1, VALUE a2, int raise)
 {
-    if (NIL_P(a1) || NIL_P(a2))
+    if (NIL_P(a1) || NIL_P(a2)) {
+        if (!raise) return Qnil;
 	rb_raise(rb_eTypeError, "can't convert nil into Complex");
+    }
 
     if (RB_TYPE_P(a1, T_STRING)) {
 	a1 = string_to_c_strict(a1, raise);