diff --git a/tests/baselines/reference/parseRegularExpressionMixedWithComments.errors.txt b/tests/baselines/reference/parseRegularExpressionMixedWithComments.errors.txt
new file mode 100644
index 00000000000..a6d63ce1754
--- /dev/null
+++ b/tests/baselines/reference/parseRegularExpressionMixedWithComments.errors.txt
@@ -0,0 +1,27 @@
+tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts(5,18): error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
+tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts(5,22): error TS1109: Expression expected.
+tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts(5,23): error TS2363: The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
+tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts(6,18): error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
+tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts(6,26): error TS1109: Expression expected.
+tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts(6,27): error TS2363: The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
+
+
+==== tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts (6 errors) ====
+    var regex1 = / asdf /;
+    var regex2 = /**// asdf /;
+    var regex3 = /**///**/ asdf /       // should be a comment line
+    1;
+    var regex4 = /**// /**/asdf /;
+                     ~~~
+!!! error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
+                         ~
+!!! error TS1109: Expression expected.
+                          ~~~~~~~
+!!! error TS2363: The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
+    var regex5 = /**// asdf/**/ /;
+                     ~~~~~~~
+!!! error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
+                             ~
+!!! error TS1109: Expression expected.
+                              ~~~
+!!! error TS2363: The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
\ No newline at end of file
diff --git a/tests/baselines/reference/parseRegularExpressionMixedWithComments.js b/tests/baselines/reference/parseRegularExpressionMixedWithComments.js
new file mode 100644
index 00000000000..c7aded33697
--- /dev/null
+++ b/tests/baselines/reference/parseRegularExpressionMixedWithComments.js
@@ -0,0 +1,14 @@
+//// [parseRegularExpressionMixedWithComments.ts]
+var regex1 = / asdf /;
+var regex2 = /**// asdf /;
+var regex3 = /**///**/ asdf /       // should be a comment line
+1;
+var regex4 = /**// /**/asdf /;
+var regex5 = /**// asdf/**/ /;
+
+//// [parseRegularExpressionMixedWithComments.js]
+var regex1 = / asdf /;
+var regex2 = / asdf /;
+var regex3 = 1;
+var regex4 = / / *  * /asdf /;
+var regex5 = / asdf/ *  * / /;
diff --git a/tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts b/tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts
new file mode 100644
index 00000000000..5e5c2e85485
--- /dev/null
+++ b/tests/cases/conformance/parser/ecmascript5/RegularExpressions/parseRegularExpressionMixedWithComments.ts
@@ -0,0 +1,6 @@
+var regex1 = / asdf /;
+var regex2 = /**// asdf /;
+var regex3 = /**///**/ asdf /       // should be a comment line
+1;
+var regex4 = /**// /**/asdf /;
+var regex5 = /**// asdf/**/ /;
\ No newline at end of file