proc.c: proc without block

* proc.c (proc_new): promoted lambda/proc/Proc.new with no block
  in a method called with a block to a warning/error.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66772 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 22 insertions, 18 deletions

diff --git a/spec/ruby/optional/capi/proc_spec.rb b/spec/ruby/optional/capi/proc_spec.rb
index 94c9276c09..bffb32484c 100644
--- a/spec/ruby/optional/capi/proc_spec.rb
+++ b/spec/ruby/optional/capi/proc_spec.rb
@@ -69,16 +69,18 @@ describe "C-API when calling Proc.new from a C function" do
   # For example: C -> Ruby <- C -> Ruby means a C function called into Ruby
   # code which returned to C, then C called into Ruby code again.
 
-  #   Ruby -> C -> rb_funcall(Proc.new)
-  it "returns the Proc passed by the Ruby code calling the C function" do
-    prc = @p.rb_Proc_new(0) { :called }
-    prc.call.should == :called
-  end
+  ruby_version_is ""..."2.7" do
+    #   Ruby -> C -> rb_funcall(Proc.new)
+    it "returns the Proc passed by the Ruby code calling the C function" do
+      prc = @p.rb_Proc_new(0) { :called }
+      prc.call.should == :called
+    end
 
-  #   Ruby -> C -> Ruby <- C -> rb_funcall(Proc.new)
-  it "returns the Proc passed to the Ruby method when the C function calls other Ruby methods before calling Proc.new" do
-    prc = @p.rb_Proc_new(1) { :called }
-    prc.call.should == :called
+    #   Ruby -> C -> Ruby <- C -> rb_funcall(Proc.new)
+    it "returns the Proc passed to the Ruby method when the C function calls other Ruby methods before calling Proc.new" do
+      prc = @p.rb_Proc_new(1) { :called }
+      prc.call.should == :called
+    end
   end
 
   # Ruby -> C -> Ruby -> Proc.new
@@ -93,16 +95,18 @@ describe "C-API when calling Proc.new from a C function" do
     lambda { @p.rb_Proc_new(3) { :called } }.should raise_error(ArgumentError)
   end
 
-  # Ruby -> C -> Ruby -> C (with new block) -> rb_funcall(Proc.new)
-  it "returns the most recent Proc passed when the Ruby method called the C function" do
-    prc = @p.rb_Proc_new(4) { :called }
-    prc.call.should == :calling_with_block
-  end
+  ruby_version_is ""..."2.7" do
+    # Ruby -> C -> Ruby -> C (with new block) -> rb_funcall(Proc.new)
+    it "returns the most recent Proc passed when the Ruby method called the C function" do
+      prc = @p.rb_Proc_new(4) { :called }
+      prc.call.should == :calling_with_block
+    end
 
-  # Ruby -> C -> Ruby -> C (with new block) <- Ruby <- C -> # rb_funcall(Proc.new)
-  it "returns the Proc passed from the original Ruby call to the C function" do
-    prc = @p.rb_Proc_new(5) { :called }
-    prc.call.should == :called
+    # Ruby -> C -> Ruby -> C (with new block) <- Ruby <- C -> # rb_funcall(Proc.new)
+    it "returns the Proc passed from the original Ruby call to the C function" do
+      prc = @p.rb_Proc_new(5) { :called }
+      prc.call.should == :called
+    end
   end
 
   # Ruby -> C -> Ruby -> block_given?