From f87db23bb532580c060a0122a175dfaa6f75a3c1 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Mon, 26 Jan 2026 13:32:43 +0100
Subject: [PATCH 1/2] Update tokenize.cpp

---
 lib/tokenize.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 33a59d7bda3..1fd86453e5c 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -3341,12 +3341,14 @@ bool Tokenizer::simplifyUsing()
                     }
                 } else if (fpArgList && fpQual && Token::Match(tok1->next(), "%name%")) {
                     // function pointer
+                    const bool isFuncDecl = Token::simpleMatch(tok1->tokAt(2), "(");
                     TokenList::copyTokens(tok1->next(), fpArgList, usingEnd->previous());
                     Token* const copyEnd = TokenList::copyTokens(tok1, start, fpQual->link()->previous());
                     Token* leftPar = copyEnd->previous();
                     while (leftPar->str() != "(")
                         leftPar = leftPar->previous();
-                    Token* const rightPar = copyEnd->next()->insertToken(")");
+                    Token* const insertTok = isFuncDecl ? copyEnd->linkAt(2) : copyEnd->next();
+                    Token* const rightPar = insertTok->insertToken(")");
                     Token::createMutualLinks(leftPar, rightPar);
                     tok1->deleteThis();
                     substitute = true;

From 6151fcb31b519becbc29047cd92d94c1d6386361 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Mon, 26 Jan 2026 13:34:49 +0100
Subject: [PATCH 2/2] Update testsimplifyusing.cpp

---
 test/testsimplifyusing.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/test/testsimplifyusing.cpp b/test/testsimplifyusing.cpp
index c020b99b5dd..647668a93b2 100644
--- a/test/testsimplifyusing.cpp
+++ b/test/testsimplifyusing.cpp
@@ -899,13 +899,19 @@ class TestSimplifyUsing : public TestFixture {
         ASSERT_EQUALS(expected2, tok(code2));
         ASSERT_EQUALS("", errout_str());
 
-        const char code3[] = "using FP = std::string (*)();\n"
+        const char code3[] = "using FP = std::string (*)();\n" // #14421
                              "using FPC = std::string (*const)();\n"
                              "FP fp;\n"
                              "FPC fpc{};\n";
         const char expected3[] = "std :: string ( * fp ) ( ) ; std :: string ( * const fpc ) ( ) { } ;";
         ASSERT_EQUALS(expected3, tok(code3));
         ASSERT_EQUALS("", errout_str());
+
+        const char code4[] = "using F = void(*)(char);\n" // #14429
+                             "F f(int);\n";
+        const char expected4[] = "void * f ( char ) ;";
+        ASSERT_EQUALS(expected4, tok(code4));
+        ASSERT_EQUALS("", errout_str());
     }
 
     void simplifyUsing8970() {