Microsoft KB Archive/166513

= FIX: Typedef Type Causes C2275: Illegal Use of Type =

Article ID: 166513

Article Last Modified on 7/5/2005

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APPLIES TO


 * Microsoft Visual C++ 4.2 Enterprise Edition
 * Microsoft Visual C++ 4.2 Professional Edition
 * Microsoft Visual C++ 5.0 Enterprise Edition
 * Microsoft Visual C++ 5.0 Professional Edition

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This article was previously published under Q166513



SYMPTOMS
Using a typedef cast in the member initialization of a class may cause the following errors:

error C2275: 'test::run' : illegal use of this type as an expression

error C2146: syntax error : missing ')' before identifier 'arg'

error C2612: trailing '.*|->*' illegal in base/member initializer list

error C2059: syntax error : ')'

error C2143: syntax error : missing ';' before '{'

fatal error C1004: unexpected end of file found



RESOLUTION
Use the actual type rather then the typedef. For example, in the following sample use test::run rather than test_run. Or, use the functional notation test_run (arg) for type conversion instead of the cast notation. Another option is to initialize the member in the body of function.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was corrected in Microsoft Visual C++ version 6.0.



MORE INFORMATION
/* Compiler Options Needed : none */

class test { public: enum run{ one, two, three }; };

typedef test::run test_run;

class test2 { test2(int); ~test2; public: test_run testvalue; };

test2::test2(int arg):testvalue( (test_run) arg) {}    //Causes error

// test2::test2(int arg):testvalue( (test::run) arg) {} //WORKAROUND 1 // test2::test2(int arg):testvalue( test_run (arg)) {} //WORKAROUND 2

Keywords: kbbug kbfix kbvc600fix KB166513

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