From 8c63c8ced1a18ef071d155ea3d4bd797680dc4c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?= <daniel.marjamaki@gmail.com>
Date: Tue, 7 Nov 2023 20:48:56 +0100
Subject: [PATCH] Fix #12156 (AST: do not create AST for variable declaration
 'bool& var') (#5631)

---
 lib/tokenlist.cpp     | 5 +++++
 test/testtokenize.cpp | 1 +
 2 files changed, 6 insertions(+)

diff --git a/lib/tokenlist.cpp b/lib/tokenlist.cpp
index 7539538b5..a30ef0668 100644
--- a/lib/tokenlist.cpp
+++ b/lib/tokenlist.cpp
@@ -1454,8 +1454,11 @@ static Token * createAstAtToken(Token *tok, bool cpp)
             return tok2;
     }
     if (Token::Match(tok, "%type%") && !Token::Match(tok, "return|throw|if|while|new|delete")) {
+        bool isStandardTypeOrQualifier = false;
         Token* type = tok;
         while (Token::Match(type, "%type%|*|&|<")) {
+            if (type->isName() && (type->isStandardType() || Token::Match(type, "const|mutable|static|volatile")))
+                isStandardTypeOrQualifier = true;
             if (type->str() == "<") {
                 if (type->link())
                     type = type->link();
@@ -1464,6 +1467,8 @@ static Token * createAstAtToken(Token *tok, bool cpp)
             }
             type = type->next();
         }
+        if (isStandardTypeOrQualifier && Token::Match(type, "%var% [;,)]"))
+            return type;
         if (Token::Match(type, "( * *| %var%") &&
             Token::Match(type->link()->previous(), "%var%|] ) (") &&
             Token::Match(type->link()->linkAt(1), ") [;,)]"))
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 78ae0a00c..0b753f571 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -6483,6 +6483,7 @@ private:
 
         ASSERT_EQUALS("", testAst("void f(enum E* var){}"));
         ASSERT_EQUALS("", testAst("void f(enum E*& var){}"));
+        ASSERT_EQUALS("", testAst("void f(bool& var){}"));
     }
 
     void astunaryop() const { // unary operators