Add test for 14480

Author: ludviggunne

test/testuninitvar.cpp

@@ -97,6 +97,7 @@ class TestUninitVar : public TestFixture {
         TEST_CASE(uninitvar_memberfunction);
         TEST_CASE(uninitvar_nonmember); // crash in ycmd test
         TEST_CASE(uninitvarDesignatedInitializers);
+        TEST_CASE(uninitvarMemberPointer);
 
         TEST_CASE(isVariableUsageDeref); // *p
         TEST_CASE(isVariableUsageDerefValueflow); // *p
@@ -7825,6 +7826,16 @@ class TestUninitVar : public TestFixture {
         ASSERT_EQUALS("", errout_str());
     }
 
+    void uninitvarMemberPointer() {
+        checkUninitVar("void f()\n"
+                       "{\n"
+                       "  struct S {};\n"
+                       "  int S::* mp;\n"
+                       "  if (mp) {}\n"
+                       "}\n");
+        ASSERT_EQUALS("[test.cpp:5:7]: (error) Uninitialized variable: mp [legacyUninitvar]\n", errout_str());
+    }
+
     void isVariableUsageDeref() {
         // *p
         checkUninitVar("void f() {\n"