Fixed #1218 (Improve check: incrementing uninitialized variable i++)

lib/checkother.cpp

@@ -1607,6 +1607,12 @@ private:
                 return &tok;
             }
 
+            if (Token::Match(tok.previous(), "++|--") || Token::Match(tok.next(), "++|--"))
+            {
+                use(foundError, checks, &tok);
+                return &tok;
+            }
+
             if (Token::Match(tok.previous(), "[;{}] %var% ="))
             {
                 // using same variable rhs?

test/testother.cpp

@@ -1076,6 +1076,13 @@ private:
                        "}\n");
         ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
 
+        checkUninitVar("void f()\n"
+                       "{\n"
+                       "    int a;\n"
+                       "    a++;\n"
+                       "}\n");
+        ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
+
         checkUninitVar("static void foo()\n"
                        "{\n"
                        "    int i;\n"