uninitialized variables: fixed false negatives when uninitialized pointer data is read

lib/checkother.cpp

@@ -3469,6 +3469,10 @@ private:
             {
                 use(checks, tok.next());
             }
+            else if (Token::Match(tok.next(), "%var% ["))
+            {
+                use_array_or_pointer_data(checks, tok.next());
+            }
         }
 
         if (tok.varId())
@@ -3617,9 +3621,12 @@ private:
 
     bool parseCondition(const Token &tok, std::list<ExecutionPath *> &checks)
     {
-        if (tok.varId() && Token::Match(&tok, "%var% <|<=|==|!=|)|["))
+        if (tok.varId() && Token::Match(&tok, "%var% <|<=|==|!=|)"))
             use(checks, &tok);
 
+        else if (Token::Match(&tok, "!| %var% ["))
+            use_array_or_pointer_data(checks, tok.str() == "!" ? tok.next() : &tok);
+
         else if (Token::Match(&tok, "!| %var% ("))
         {
             std::list<const Token *> var;

test/testother.cpp

@@ -1992,6 +1992,20 @@ private:
                        "}\n");
         ASSERT_EQUALS("[test.cpp:4]: (error) Data is allocated but not initialized: p\n", errout.str());
 
+        checkUninitVar("void f()\n"
+                       "{\n"
+                       "    char *p = malloc(64);\n"
+                       "    if (p[0]) { }\n"
+                       "}\n");
+        ASSERT_EQUALS("[test.cpp:4]: (error) Data is allocated but not initialized: p\n", errout.str());
+
+        checkUninitVar("void f()\n"
+                       "{\n"
+                       "    char *p = malloc(64);\n"
+                       "    return p[0];\n"
+                       "}\n");
+        ASSERT_EQUALS("[test.cpp:4]: (error) Data is allocated but not initialized: p\n", errout.str());
+
         checkUninitVar("void f()\n"
                        "{\n"
                        "    Fred *fred = new Fred;\n"