Fix #11002 FP uninitStructMember with extra parentheses (#4047)

Author: chrchr-github

lib/checkuninitvar.cpp

@@ -1461,7 +1461,7 @@ bool CheckUninitVar::isMemberVariableUsage(const Token *tok, bool isPointer, All
         if (parent && parent->isUnaryOp("&"))
             return false;
         return true;
-    } else if (!isPointer && Token::Match(tok->previous(), "[(,] %name% [,)]") && isVariableUsage(tok, isPointer, alloc))
+    } else if (!isPointer && !Token::simpleMatch(tok->astParent(), ".") && Token::Match(tok->previous(), "[(,] %name% [,)]") && isVariableUsage(tok, isPointer, alloc))
         return true;
 
     else if (!isPointer && Token::Match(tok->previous(), "= %name% ;"))

test/testuninitvar.cpp

@@ -4132,6 +4132,15 @@ class TestUninitVar : public TestFixture {
                        "    x = a.m;\n"
                        "}");
         ASSERT_EQUALS("", errout.str());
+
+        // #11002
+        checkUninitVar("struct S { char *p; int len; };\n"
+                       "void f() {\n"
+                       "    S s;\n"
+                       "    s.p = nullptr;\n"
+                       "    char* q = (s).p;\n"
+                       "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void uninitvar2_while() {