Fix #11459 uninitvar false positive (#5011)

* Fix #11459 uninitvar false positive

* Format

Author: chrchr-github

lib/symboldatabase.cpp

@@ -4959,6 +4959,11 @@ const Enumerator * SymbolDatabase::findEnumerator(const Token * tok, std::set<st
             if (varTok && varTok->variable() && varTok->variable()->type() && varTok->variable()->type()->classScope)
                 scope = varTok->variable()->type()->classScope;
         }
+        else if (Token::simpleMatch(tok->astParent(), "[")) {
+            const Token* varTok = tok->astParent()->previous();
+            if (varTok && varTok->variable() && varTok->variable()->scope() && Token::simpleMatch(tok->astParent()->astOperand1(), "::"))
+                scope = varTok->variable()->scope();
+        }
 
         for (std::vector<Scope *>::const_iterator s = scope->nestedList.cbegin(); s != scope->nestedList.cend(); ++s) {
             enumerator = (*s)->findEnumerator(tokStr);

test/testuninitvar.cpp

@@ -5998,6 +5998,21 @@ class TestUninitVar : public TestFixture {
                         "        if ((cp = getenv(envar)) != NULL) {}\n"
                         "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        // #11459
+        valueFlowUninit("struct S {\n"
+                        "    enum E { N = 3 };\n"
+                        "    static const int A[N];\n"
+                        "    static void f();\n"
+                        "};\n"
+                        "const int S::A[N] = { 0, 1, 2 };\n"
+                        "void S::f() {\n"
+                        "    int tmp[N];\n"
+                        "    for (int i = 0; i < N; i++)\n"
+                        "        tmp[i] = 0;\n"
+                        "    if (tmp[0]) {}\n"
+                        "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void valueFlowUninitBreak() { // Do not show duplicate warnings about the same uninitialized value