Fix #10882 FP constStatement with negation and cast (#3951)

lib/tokenlist.cpp

@@ -566,7 +566,7 @@ static bool iscast(const Token *tok, bool cpp)
             }
             return type || tok2->strAt(-1) == "*" || Token::simpleMatch(tok2, ") ~") ||
                    (Token::Match(tok2, ") %any%") &&
-                    !tok2->next()->isOp() &&
+                    (!tok2->next()->isOp() || Token::Match(tok2->next(), "!|~|++|--")) &&
                     !Token::Match(tok2->next(), "[[]);,?:.]"));
         }
 

test/testincompletestatement.cpp

@@ -555,6 +555,13 @@ private:
               "    f(1, { static_cast<int*>(nullptr) });\n"
               "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        check("struct S { int i; };\n" // #10882
+              "enum E {};\n"
+              "void f(const S* s) {\n"
+              "    E e = (E)!s->i;\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void vardecl() {

test/testtokenize.cpp

@@ -6298,6 +6298,8 @@ private:
 
         ASSERT_EQUALS("fon!(restoring01:?,(", testAst("f((long) !on, restoring ? 0 : 1);"));
 
+        ASSERT_EQUALS("esi.!(=", testAst("E e = (E)!s->i;")); // #10882
+
         // not cast
         ASSERT_EQUALS("AB||", testAst("(A)||(B)"));
         ASSERT_EQUALS("abc[1&=", testAst("a = (b[c]) & 1;"));