c++/6711: usage of typeof() generates internal error

[marco at technoboredom dot net]

>Number:         6711
>Category:       c++
>Synopsis:       usage of typeof()  generates internal error
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri May 17 16:06:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     marco@technoboredom.net
>Release:        unknown-1.0
>Organization:
>Environment:
$ uname -a
CYGWIN_NT-5.0 OBLOMOW 1.3.10(0.51/3/2) 2002-02-25 11:14 i686 unknown

Administrator@OBLOMOW /cygdrive/c/tmp/New Folder
$ gcc -v
Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/3.1/specs
Configured with: ../gcc-3.1/configure --program-suffix=-3.1 --enable-shared --enable-threads=win32 --enable-languages=c,
c++,objc,f77 --enable-win32-registry : (reconfigured) ../gcc-3.1/configure --prefix=/usr --program-suffix=-3.1 --enable-
shared --enable-threads=win32 --enable-languages=c,c++,objc,f77 --enable-win32-registry
Thread model: win32
gcc version 3.1
>Description:
GCC doesn't recognize expressions of the form typeof()::type, and under certain circumstances it produces a request to submit a bug report. 
>How-To-Repeat:
If the attachment 'b.cc' is compiled with: 

 gcc -DA -c b.cc 

then this message: 
<quote>
b.cc: In function `int main()':
b.cc:10: `template<class _Category, class _Tp, class _Distance, class _Pointer,
   class _Reference> struct std::iterator' as declarator
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
<quote>
If the attachment 'b.cc' is compiled with: 

 gcc -DB -c b.cc 

then this message: 

b.cc: In function `int main()':
b.cc:20: parse error before `=' token
b.cc:20: `it' undeclared (first use this function)
b.cc:20: (Each undeclared identifier is reported only once for each function it
   appears in.)
</quote>

is generated. In the -DB case the "using namespace std;" statement is removed.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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