Fix #11785 Syntax error: typedef not first keyword in statement (#5178)

Author: chrchr-github

lib/tokenize.cpp

@@ -8246,7 +8246,8 @@ void Tokenizer::findGarbageCode() const
                 prev = prev->previous();
             if (Token::Match(prev, "%op%|%num%|%str%|%char%")) {
                 if (!Token::simpleMatch(tok->tokAt(-2), "operator \"\" if") &&
-                    !Token::simpleMatch(tok->tokAt(-2), "extern \"C\""))
+                    !Token::simpleMatch(tok->tokAt(-2), "extern \"C\"") &&
+                    !Token::simpleMatch(prev, "> typedef"))
                     syntaxError(tok, prev == tok->previous() ? (prev->str() + " " + tok->str()) : (prev->str() + " .. " + tok->str()));
             }
         }

test/testtokenize.cpp

@@ -6918,6 +6918,9 @@ class TestTokenizer : public TestFixture {
         ASSERT_NO_THROW(tokenizeAndStringify("template <class T> constexpr int n = 1;\n"
                                              "template <class T> T a[n<T>];\n"));
 
+        ASSERT_EQUALS("std :: vector < int > x ;", // #11785
+                      tokenizeAndStringify("std::vector<int> typedef v; v x;\n"));
+
 
         // op op
         ASSERT_THROW_EQUALS(tokenizeAndStringify("void f() { dostuff (x==>y); }"), InternalError, "syntax error: == >");