fix backtrace on argment error.

* vm_backtrace.c (rb_backtrace_use_iseq_first_lineno_for_last_location):
  added. It modifies last location's line as corresponding iseq's first line
  number.

* vm_args.c (raise_argument_error): use added function.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60725 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 27 insertions, 0 deletions

diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index ce67aada2b..778fcdc9bc 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -990,4 +990,31 @@ class TestMethod < Test::Unit::TestCase
     assert_equal('1', obj.foo(1))
     assert_equal('1', obj.bar(1))
   end
+
+  def test_argument_error_location
+    body = <<-'END_OF_BODY'
+    eval <<-'EOS'
+    $line_lambda = __LINE__; $f = lambda do
+      _x = 1
+    end
+    $line_method = __LINE__; def foo
+      _x = 1
+    end
+    begin
+      $f.call(1)
+    rescue ArgumentError => e
+      assert_equal "(eval):#{$line_lambda.to_s}:in `block in <main>'", e.backtrace.first
+    end
+    begin
+      foo(1)
+    rescue ArgumentError => e
+      assert_equal "(eval):#{$line_method}:in `foo'", e.backtrace.first
+    end
+    EOS
+    END_OF_BODY
+
+    assert_separately [], body
+    # without trace insn
+    assert_separately [], "RubyVM::InstructionSequence.compile_option = {trace_instruction: false}\n" + body
+  end
 end