Check type of instruction - can be INSN or ADJUST

If the type is ADJUST we don't want to treat it like an INSN so we have
to check the type before reading from `insn_info.events`.

[Bug #18001] [ruby-core:104371]

Co-authored-by: Aaron Patterson <tenderlove@ruby-lang.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/test/coverage/test_coverage.rb b/test/coverage/test_coverage.rb
index a80e33379c..22557bd9d8 100644
--- a/test/coverage/test_coverage.rb
+++ b/test/coverage/test_coverage.rb
@@ -760,4 +760,18 @@ class TestCoverage < Test::Unit::TestCase
       foo { raise } rescue nil
     end;
   end
+
+  def test_coverage_with_asan
+    result = { :lines => [1, 1, 0, 0, nil, nil, nil] }
+
+    assert_coverage(<<~"end;", { lines: true }, result) # Bug #18001
+      class Foo
+        def bar
+          baz do |x|
+            next unless Integer == x
+          end
+        end
+      end
+    end;
+  end
 end