Fix #11914 Crash when checking widelands (#5404)

Author: chrchr-github

lib/astutils.cpp

@@ -2539,7 +2539,7 @@ bool isVariableChanged(const Token *tok, int indirect, const Settings *settings,
 
     // Check addressof
     if (tok2->astParent() && tok2->astParent()->isUnaryOp("&")) {
-        if (isVariableChanged(tok2->astParent(), indirect + 1, settings, depth - 1))
+        if (isVariableChanged(tok2->astParent(), indirect + 1, settings, cpp, depth - 1))
             return true;
     } else {
         // If its already const then it cant be modified

test/testvalueflow.cpp

@@ -7165,6 +7165,12 @@ class TestValueFlow : public TestFixture {
                "    (*printf)(\"%s %i\", strerror(errno), b ? 0 : 1);\n"
                "};\n";
         valueOfTok(code, "?");
+
+        code = "void f(int i) {\n" // #11914
+               "    int& r = i;\n"
+               "    int& q = (&r)[0];\n"
+               "}\n";
+        valueOfTok(code, "&");
     }
 
     void valueFlowHang() {