Merge pull request #5164 from chrchr-github/chr_Fix11768

Fix #11768 FP autovarInvalidDeallocation

Author: chrchr-github

lib/checkautovariables.cpp

@@ -294,6 +294,8 @@ void CheckAutoVariables::autoVariables()
             else if ((Token::Match(tok, "%name% ( %var%|%str% ) ;") && mSettings->library.getDeallocFuncInfo(tok)) ||
                      (mTokenizer->isCPP() && Token::Match(tok, "delete [| ]| (| %var%|%str% !!["))) {
                 tok = Token::findmatch(tok->next(), "%var%|%str%");
+                if (Token::simpleMatch(tok->astParent(), "."))
+                    continue;
                 if (isArrayVar(tok) || tok->tokType() == Token::eString)
                     errorInvalidDeallocation(tok, nullptr);
                 else if (tok->variable() && tok->variable()->isPointer()) {

test/testautovariables.cpp

@@ -837,6 +837,16 @@ class TestAutoVariables : public TestFixture {
               "        free(p);\n"
               "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        check("struct E { int* i; };\n" // #11768
+              "struct C { E e; };\n"
+              "int foo(C* cin) {\n"
+              "    E* e = &cin->e;\n"
+              "    e->i = new int[42];\n"
+              "    delete[] e->i;\n"
+              "    return 0;\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void testinvaliddealloc_input() {