Re: libstdc++/3658: redefinition of symbols and syntax error

[Thomas Hiller <thomas.hiller@sap.com>]

The following reply was made to PR libstdc++/3658; it has been noted by GNATS.

From: Thomas Hiller <thomas.hiller@sap.com>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/3658: redefinition of symbols and syntax error
Date: Thu, 23 Aug 2001 09:59:24 +0200

 Hi,
 
 I'm working on Linux. The StdAfx.h comes from porting the software...
 
 The real problem was another:
 
 We have a declaration of min() and max() macros in our standard include
 (saptype.h).
 Unfortunately some C++ standard classes have a min() method. With the
 min() macro this is changed in an uncorrect way.
 
 Declaration of min() macro:
 #define min(a,b)       (((a) <= (b)) ? (a) : (b))
 
 From
 /opt/gcc-20010716/include/g++-v3/ia64-unknown-linux/bits/std_limits.h:
     ...
     template<typename _Tp> struct numeric_limits {
         static const bool is_specialized = false;
 
         static _Tp min() throw() { return static_cast<_Tp>(0); }
     ...
 This is preprocessed to something like
     ...
     template<typename _Tp> struct numeric_limits {
         static const bool is_specialized = false;
 
         static _Tp min throw() { return static_cast<_Tp>(0); }
     ...
 which of course is not correct.
 
 I mentioned it in another bug report for cpp, but this was closed as
 normal behaviour.
 The SUN compiler can distinguish in this case though.
 
 Best regards,
 Thomas
 
 pme@gcc.gnu.org wrote:
 
 > Synopsis: redefinition of symbols and syntax error
 >
 > State-Changed-From-To: open->feedback
 > State-Changed-By: pme
 > State-Changed-When: Mon Aug 20 14:39:20 2001
 > State-Changed-Why:
 >
 >     You have not included any source code; we have no way of
 >     reproducing the bug.  You need to read the bug reporting
 >     instructions at http://gcc.gnu.org/bugs.html .  Please do
 >     so, and then send another bug report as a followup to this
 >     one (PR 3658).
 >
 >     Also, the mention of "StdAfx.h" in your error message makes
 >     me think that you are working under Windows.  If this is
 >     the case, then you should be using the Cygwin tools.
 >
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=3658&database=gcc