Update testmemleak.cpp

Author: chrchr-github

test/testmemleak.cpp

@@ -1673,6 +1673,7 @@ class TestMemleakStructMember : public TestFixture {
         TEST_CASE(assign2);
         TEST_CASE(assign3);
         TEST_CASE(assign4); // #11019
+        TEST_CASE(assign5);
 
         // Failed allocation
         TEST_CASE(failedAllocation);
@@ -1919,6 +1920,29 @@ class TestMemleakStructMember : public TestFixture {
         ASSERT_EQUALS("", errout_str());
     }
 
+    void assign5() {
+        check("struct S { int fd; };\n"
+              "void f() {\n"
+              "    struct S* s = (struct S*)malloc(sizeof(struct S));\n"
+              "    s->fd = open(\"abc\", O_RDWR | O_NOCTTY);\n"
+              "    free(s);\n"
+              "}\n"
+              "void g() {\n"
+              "    struct S* s = static_cast<struct S*>(malloc(sizeof(struct S)));\n"
+              "    s->fd = open(\"abc\", O_RDWR | O_NOCTTY);\n"
+              "    free(s);\n"
+              "}\n"
+              "void h() {\n"
+              "    S* s = new S;\n"
+              "    s->fd = open(\"abc\", O_RDWR | O_NOCTTY);\n"
+              "    delete s;\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:5:5]: (error) Resource leak: s.fd [resourceLeak]\n"
+                      "[test.cpp:10:5]: (error) Resource leak: s.fd [resourceLeak]\n"
+                      "[test.cpp:16:1]: (error) Resource leak: s.fd [resourceLeak]\n",
+                      errout_str());
+    }
+
     void failedAllocation() {
         check("static struct ABC * foo()\n"
               "{\n"