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Mail Archives: cygwin/2001/06/06/03:33:11

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Message-ID: <20010606073251.45339.qmail@web14507.mail.yahoo.com>
Date: Wed, 6 Jun 2001 17:32:51 +1000 (EST)
From: =?iso-8859-1?q?Danny=20Smith?= <danny_r_smith_2001 AT yahoo DOT co DOT nz>
Subject: Re: bug report on gcc port
To: cygwin AT cygwin DOT com
In-Reply-To: <00c201c0ee02$458b0d60$6982c039@3hi25.flashcom.com>
MIME-Version: 1.0

--- Clark Sims <csims AT templartrading DOT com> wrote: > The following code fragment
bombs the cygwin port of gcc:
> 
> #include <string>
> #include <ctype.h>
> 
> std::string foo( const std::string& rhs);
> 
> std::string foo( const std::string& rhs) {
>   std::string str = rhs;
>   for (size_t i=0; i<str.size(); i++) {
>     str[i] = ::tolower( str[i]);
>   }
>   return str;
> }
> 
> gcc -c foo.cpp :
> foo.cpp: In function `class string foo(const string &)':
> foo.cpp:9: parse error before `__extension__'
> foo.cpp:9: `__x' undeclared (first use this function)
> foo.cpp:9: (Each undeclared identifier is reported only once
> foo.cpp:9: for each function it appears in.)
> foo.cpp:9: parse error before `)'
> 
> The code fragments works well in other compilers and other ports of gcc.
> 
> 

Yes, the problem is in the is* and to*  macros in ctype.h.  Std C++ has
(overloaded) functions with same name and the macros cause havoc.  The macros
need to be guarded with #ifndef __cplusplus

In the meantime try enclosing (::tolower) in parenthesis to force use of
function rather than macro.

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