Fixed #8259 (Don't combine &= for anonymous reference parameters)

Author: danmar

lib/tokenize.cpp

@@ -1832,7 +1832,7 @@ void Tokenizer::combineOperators()
             const char c2 = tok->next()->str()[0];
 
             // combine +-*/ and =
-            if (c2 == '=' && (std::strchr("+-*/%&|^=!<>", c1))) {
+            if (c2 == '=' && (std::strchr("+-*/%|^=!<>", c1))) {
                 tok->str(tok->str() + c2);
                 tok->deleteNext();
                 continue;

test/testtokenize.cpp

@@ -911,6 +911,7 @@ class TestTokenizer : public TestFixture {
         ASSERT_EQUALS("; public: ;", tokenizeAndStringify(";public:;", false));
         ASSERT_EQUALS("; __published: ;", tokenizeAndStringify(";__published:;", false));
         ASSERT_EQUALS("a . public : ;", tokenizeAndStringify("a.public:;", false));
+        ASSERT_EQUALS("void f ( x & = 2 ) ;", tokenizeAndStringify("void f(x &= 2);", false));
     }
 
     void concatenateNegativeNumber() {