fix compiler crash

microsoft · Jul 25, 2018 · a118901 · a118901
1 parent e4d4b0a
commit a118901
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Showing 5 changed files with 28 additions and 2 deletions.
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
@@ -2770,8 +2770,8 @@ namespace ts {
             }
         }
 
-        function emitEmbeddedStatement(parent: Node, node: Statement) {
-            if (isBlock(node) || getEmitFlags(parent) & EmitFlags.SingleLine) {
+        function emitEmbeddedStatement(parent: Node, node: Statement | undefined) {
+            if (node && isBlock(node) || getEmitFlags(parent) & EmitFlags.SingleLine) {
                 writeSpace();
                 emit(node);
             }

diff --git a/tests/baselines/reference/constEnum4.js b/tests/baselines/reference/constEnum4.js
@@ -0,0 +1,9 @@
+//// [constEnum4.ts]
+if (true) {
+    const enum A { }
+}
+
+
+//// [constEnum4.js]
+if (true) {
+}
diff --git a/tests/baselines/reference/constEnum4.symbols b/tests/baselines/reference/constEnum4.symbols
@@ -0,0 +1,6 @@
+=== tests/cases/conformance/constEnums/constEnum4.ts ===
+if (true) {
+    const enum A { }
+>A : Symbol(A, Decl(constEnum4.ts, 0, 11))
+}
+
diff --git a/tests/baselines/reference/constEnum4.types b/tests/baselines/reference/constEnum4.types
@@ -0,0 +1,8 @@
+=== tests/cases/conformance/constEnums/constEnum4.ts ===
+if (true) {
+>true : true
+
+    const enum A { }
+>A : A
+}
+
diff --git a/tests/cases/conformance/constEnums/constEnum4.ts b/tests/cases/conformance/constEnums/constEnum4.ts
@@ -0,0 +1,3 @@
+if (true) {
+    const enum A { }
+}