diff --git a/ChangeLog b/ChangeLog
index 7f16c39e2a..d6715b4275 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+Tue Aug 16 21:12:07 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* compile.c (ADD_TRACE): ignore trace instruction on non-positive
+	  line.
+
+	* parse.y (coverage): get rid of ArgumentError when the starting
+	  line number is not positive.  [ruby-core:76141] [Bug #12517]
+
+Tue Aug 16 21:12:07 2016  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* test/coverage/test_coverage.rb: ignored test when enabled to coverage.
+	  It lead to crash with `make test-all`.
+
 Tue Aug 16 21:01:55 2016  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* lib/uri/mailto.rb (initialize): RFC3986_Parser#split sets opaque
diff --git a/compile.c b/compile.c
index cc8e748c83..36db683c4a 100644
--- a/compile.c
+++ b/compile.c
@@ -245,6 +245,7 @@ r_value(VALUE value)
 #define ADD_TRACE(seq, line, event) \
   do { \
       if ((event) == RUBY_EVENT_LINE && iseq->coverage && \
+	  (line) > 0 && \
 	  (line) != iseq->compile_data->last_coverable_line) { \
 	  RARRAY_ASET(iseq->coverage, (line) - 1, INT2FIX(0)); \
 	  iseq->compile_data->last_coverable_line = (line); \
diff --git a/parse.y b/parse.y
index 68ef4e9cee..fcf9b52814 100644
--- a/parse.y
+++ b/parse.y
@@ -5454,7 +5454,7 @@ coverage(VALUE fname, int n)
 {
     VALUE coverages = rb_get_coverages();
     if (RTEST(coverages) && RBASIC(coverages)->klass == 0) {
-	VALUE lines = rb_ary_tmp_new_fill(n);
+	VALUE lines = n > 0 ? rb_ary_tmp_new_fill(n) : rb_ary_tmp_new(0);
 	rb_hash_aset(coverages, fname, lines);
 	return lines;
     }
diff --git a/test/coverage/test_coverage.rb b/test/coverage/test_coverage.rb
index f4f192a578..3c767c0e58 100644
--- a/test/coverage/test_coverage.rb
+++ b/test/coverage/test_coverage.rb
@@ -61,4 +61,13 @@ class TestCoverage < Test::Unit::TestCase
   ensure
     $".replace loaded_features
   end
-end
+
+  def test_nonpositive_linenumber
+    bug12517 = '[ruby-core:76141] [Bug #12517]'
+    Coverage.start
+    assert_nothing_raised(ArgumentError, bug12517) do
+      RubyVM::InstructionSequence.compile(":ok", nil, "<compiled>", 0)
+    end
+    assert_include Coverage.result, "<compiled>"
+  end
+end unless ENV['COVERAGE']
diff --git a/version.h b/version.h
index 24b0b0e674..5c30bcb98d 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.2.6"
 #define RUBY_RELEASE_DATE "2016-08-16"
-#define RUBY_PATCHLEVEL 368
+#define RUBY_PATCHLEVEL 369
 
 #define RUBY_RELEASE_YEAR 2016
 #define RUBY_RELEASE_MONTH 8