Fix #14429 FP uninitMemberVar for function declaration (#8156)

Author: chrchr-github

lib/tokenize.cpp

@@ -3349,12 +3349,14 @@ 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;

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() {