Fixed #1177 (False positive: pointer is not dereferenced 'sizeof(*p)')

lib/checkother.cpp

@@ -1557,6 +1557,9 @@ private:
 
         if (Token::Match(&tok, "%var% ("))
         {
+            if (Token::simpleMatch(&tok, "sizeof ("))
+                return tok.next()->link();
+
             // deallocate pointer
             if (Token::Match(&tok, "free|kfree|fclose ( %var% )"))
             {

test/testother.cpp

@@ -1274,6 +1274,13 @@ private:
                        "}\n");
         ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: f\n", errout.str());
 
+        checkUninitVar("void f()\n"
+                       "{\n"
+                       "    Abc *p;\n"
+                       "    int sz = sizeof(*p);\n"
+                       "}");
+        ASSERT_EQUALS("", errout.str());
+
         // arrays..
         checkUninitVar("void f()\n"
                        "{\n"