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c++ - Error when compiling using dmc 8.52

reply Edward Diener <eddielee_no_spam_here tropicsoft.com> writes:
The following code:

#include <cwctype>

namespace std{
extern "C"{
#ifdef iswalnum
inline int (iswalnum)(wint_t i)
{ return iswalnum(i); }
#undef iswalnum
#else
#error iswalnum is undefined
#endif
} // extern "C"
} // namespace std

when compiled with dmc 8.52 using a sc.ini file of:

[Version]
version=8.52
[Environment]
PATH=%PATH%;"% P%\..\bin"
BIN="% P%\..\bin"
INCLUDE="% P%\..\stlport\stlport";"% P%\..\include";"% P%\..\mfc\include";%INCLUDE%
LIB="% P%\..\lib";"% P%\..\mfc\lib";%LIB%
HELP="% P%\..\help"

which puts stlport first among the includes, gives an error of:

C:\Programming\Programs\TestDMC\TestFile.cpp(8) : Error: 'iswalnum' is 
already defined
--- errorlevel 1

This appears to be a bug in dmc, and this bug is occuring when I try to 
run configuration tests for dmc for Boost.
Aug 18 2010
parent reply Walter Bright <newshound2 digitalmars.com> writes:
Edward Diener wrote:

 This appears to be a bug in dmc, and this bug is occuring when I try to 
 run configuration tests for dmc for Boost.



When I run it I get:

     Error test.cpp 7:  iswalnum is undefined

with or without -I\dm\stlport\stlport as a command line switch.
Aug 20 2010
parent reply Edward Diener <eddielee_no_spam_here tropicsoft.com> writes:
On 8/20/2010 2:18 PM, Walter Bright wrote:

 Edward Diener wrote:

 This appears to be a bug in dmc, and this bug is occuring when I try
 to run configuration tests for dmc for Boost.



 When I run it I get:

 Error test.cpp 7: iswalnum is undefined

 with or without -I\dm\stlport\stlport as a command line switch.



Source file is called TestFile.cpp:

#include <cwctype>

namespace std{
extern "C"{
#ifdef iswalnum
inline int (iswalnum)(wint_t i)
{ return iswalnum(i); }
#undef iswalnum
#else
#error iswalnum is undefined
#endif
} // extern "C"
} // namespace std

The sc.ini is:

[Version]
version=8.52
[Environment]
PATH=%PATH%;"% P%\..\bin"
BIN="% P%\..\bin"
INCLUDE="% P%\..\stlport\stlport";"% P%\..\include";"% P%\..\mfc\include";%INCLUDE%
LIB="% P%\..\lib";"% P%\..\mfc\lib";%LIB%
HELP="% P%\..\help"

The command line is:

dmc -c TestFile.cpp

Result is:

{ return iswalnum(i); }
^
TestFile.cpp(7) : Error: 'iswalnum' is already defined
--- errorlevel 1

Would you please try that exactly and see if it is the same ?

The only version of dmc I have is 8.52, and I compiled from within the 
dmc bin directory just to make sure nothing changed from when i 
originally compiled it from outside the dmc bin directory with my PATH 
pointing to the bin directory.

I am under Windows Vista Ultiante x_64.

The version of StlPort under dmc says 4.5.3.
Aug 20 2010
parent reply Walter Bright <newshound2 digitalmars.com> writes:
Edward Diener wrote:

 { return iswalnum(i); }
 ^
 TestFile.cpp(7) : Error: 'iswalnum' is already defined
 --- errorlevel 1
 
 Would you please try that exactly and see if it is the same ?



Yes, I got the same error now. It's because it is already defined, on line 148 
of \dm\stlport\stlport\config\stl_wince.h
Aug 20 2010
parent reply Edward Diener <eddielee_no_spam_here tropicsoft.com> writes:
On 8/20/2010 7:34 PM, Walter Bright wrote:

 Edward Diener wrote:

 { return iswalnum(i); }
 ^
 TestFile.cpp(7) : Error: 'iswalnum' is already defined
 --- errorlevel 1

 Would you please try that exactly and see if it is the same ?



 Yes, I got the same error now. It's because it is already defined, on
 line 148 of \dm\stlport\stlport\config\stl_wince.h



The code is not defining the macro again. The error is bogus and should 
not be occurring.
Aug 20 2010
parent reply Walter Bright <newshound2 digitalmars.com> writes:
Edward Diener wrote:

 On 8/20/2010 7:34 PM, Walter Bright wrote:

 Edward Diener wrote:

 { return iswalnum(i); }
 ^
 TestFile.cpp(7) : Error: 'iswalnum' is already defined
 --- errorlevel 1

 Would you please try that exactly and see if it is the same ?



 Yes, I got the same error now. It's because it is already defined, on
 line 148 of \dm\stlport\stlport\config\stl_wince.h



 The code is not defining the macro again. The error is bogus and should 
 not be occurring.



Right, it's defining a symbol again, not a macro.
Aug 20 2010
parent reply Edward Diener <eddielee_no_spam_here tropicsoft.com> writes:
On 8/21/2010 1:10 AM, Walter Bright wrote:

 Edward Diener wrote:

 On 8/20/2010 7:34 PM, Walter Bright wrote:

 Edward Diener wrote:

 { return iswalnum(i); }
 ^
 TestFile.cpp(7) : Error: 'iswalnum' is already defined
 --- errorlevel 1

 Would you please try that exactly and see if it is the same ?



 Yes, I got the same error now. It's because it is already defined, on
 line 148 of \dm\stlport\stlport\config\stl_wince.h



 The code is not defining the macro again. The error is bogus and
 should not be occurring.



 Right, it's defining a symbol again, not a macro.



Are you claiming that this is an error in the particular C++ code 
presented, and that the dmc compiler is correct in flagging it as such ?
Aug 21 2010
parent reply Walter Bright <newshound2 digitalmars.com> writes:
Edward Diener wrote:

 On 8/21/2010 1:10 AM, Walter Bright wrote:

 Edward Diener wrote:

 On 8/20/2010 7:34 PM, Walter Bright wrote:

 Edward Diener wrote:

 { return iswalnum(i); }
 ^
 TestFile.cpp(7) : Error: 'iswalnum' is already defined
 --- errorlevel 1

 Would you please try that exactly and see if it is the same ?



 Yes, I got the same error now. It's because it is already defined, on
 line 148 of \dm\stlport\stlport\config\stl_wince.h



 The code is not defining the macro again. The error is bogus and
 should not be occurring.



 Right, it's defining a symbol again, not a macro.



 Are you claiming that this is an error in the particular C++ code 
 presented, and that the dmc compiler is correct in flagging it as such ?



Consider:

=============================================
H:\cbx\ztc>type test2.cpp
inline int foo() { return 0; }
inline int foo() { return 0; }


H:\cbx\ztc>scppn test2
inline int foo() { return 0; }
                  ^
test2.cpp(2) : Error: 'foo' is already defined
==============================================

Is this not correct behavior?
Aug 21 2010
parent Edward Diener <eddielee_no_spam_here tropicsoft.com> writes:
On 8/21/2010 1:33 PM, Walter Bright wrote:

 Edward Diener wrote:

 On 8/21/2010 1:10 AM, Walter Bright wrote:

 Edward Diener wrote:

 On 8/20/2010 7:34 PM, Walter Bright wrote:

 Edward Diener wrote:

 { return iswalnum(i); }
 ^
 TestFile.cpp(7) : Error: 'iswalnum' is already defined
 --- errorlevel 1

 Would you please try that exactly and see if it is the same ?



 Yes, I got the same error now. It's because it is already defined, on
 line 148 of \dm\stlport\stlport\config\stl_wince.h



 The code is not defining the macro again. The error is bogus and
 should not be occurring.



 Right, it's defining a symbol again, not a macro.



 Are you claiming that this is an error in the particular C++ code
 presented, and that the dmc compiler is correct in flagging it as such ?



 Consider:

 =============================================
 H:\cbx\ztc>type test2.cpp
 inline int foo() { return 0; }
 inline int foo() { return 0; }


 H:\cbx\ztc>scppn test2
 inline int foo() { return 0; }
 ^
 test2.cpp(2) : Error: 'foo' is already defined
 ==============================================

 Is this not correct behavior?



OK, I see it now.
Aug 21 2010