fix #13269

Author: ludviggunne

lib/checkunusedvar.cpp

@@ -1186,7 +1186,13 @@ void CheckUnusedVar::checkFunctionVariableUsage()
         const Token* lambdaOrInlineStart{};
         const bool hasLambdaOrInline = scope->hasInlineOrLambdaFunction(&lambdaOrInlineStart);
 
+        const Token *nextStructuredBindingTok = nullptr;
+
         for (const Token *tok = scope->bodyStart; tok != scope->bodyEnd; tok = tok->next()) {
+            if (nextStructuredBindingTok)
+                tok = nextStructuredBindingTok;
+            nextStructuredBindingTok = nullptr;
+
             if (findLambdaEndToken(tok))
                 // todo: handle lambdas
                 break;
@@ -1196,6 +1202,15 @@ void CheckUnusedVar::checkFunctionVariableUsage()
             const Token *varDecl = nullptr;
             if (tok->variable() && tok->variable()->nameToken() == tok) {
                 const Token * eq = tok->next();
+                if (isStructuredBindingVariable(tok->variable())) {
+                    while (!Token::simpleMatch(eq, "]")) {
+                        eq = eq->next();
+                        if (eq->variable())
+                            nextStructuredBindingTok = eq;
+                    }
+                    if (eq)
+                        eq = eq->next();
+                }
                 while (Token::simpleMatch(eq, "["))
                     eq = eq->link()->next();
                 if (Token::simpleMatch(eq, ") (") && Token::simpleMatch(eq->linkAt(1), ") ="))