add test

Author: ludviggunne

test/testnullpointer.cpp

@@ -141,6 +141,7 @@ class TestNullPointer : public TestFixture {
         TEST_CASE(nullpointer102);
         TEST_CASE(nullpointer103);
         TEST_CASE(nullpointer104); // #13881
+        TEST_CASE(nullpointer105); // #13861
         TEST_CASE(nullpointer_addressOf); // address of
         TEST_CASE(nullpointerSwitch); // #2626
         TEST_CASE(nullpointer_cast); // #4692
@@ -2929,6 +2930,17 @@ class TestNullPointer : public TestFixture {
         ASSERT_EQUALS("", errout_str());
     }
 
+    void nullpointer105() // #13861
+    {
+        check("struct AB { int a; int b; };\n"
+              "namespace ns { typedef AB S[10]; }\n"
+              "void foo(void) {\n"
+              "    ns::S x = {0};\n"
+              "    x[1].a = 2;\n"
+              "}\n");
+        ASSERT_EQUALS("", errout_str());
+    }
+
     void nullpointer_addressOf() { // address of
         check("void f() {\n"
               "  struct X *x = 0;\n"