[Bug c++/48169] New: compiler is confused about scope

[Bug c++/48169] New: compiler is confused about scope

[peterf at silvaco dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

           Summary: compiler is confused about scope
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: peterf@silvaco.com


Created attachment 23695
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23695
gzipped .ii file

The compiler seems to get totally confused about scope.
Here comes the error message:

In file included from
VerilogA/src/vsLexer/../../include/vsParser/vsYYparse.H:22:0,
                 from vsVeriSmartLex.cxx:1652:
VerilogA/src/vsLexer/../../include/vsParser/../vsExpr/vsExpr.H: In member
function ‘virtual CVectorOfVisited CTwoArgumentOperator<P, BCOMMUTATIVE,
KIND, TYPE, CREATEFROMCHILDREN, BDERIVE, DERIVE, GETPOTENTIALREPRESENTATIONS,
TYPE_FLAGS>::getPotentialRepresentations(const visited*,
silvaco::verilogCompiler::CVerilogCompilerArgs*) const’:
VerilogA/src/vsLexer/../../include/vsParser/../vsExpr/vsExpr.H:1985:22: error:
too few arguments to function ‘int clone(int (*)(void*), void*, int,
void*)’
/usr/include/bits/sched.h:71:12: note: declared here
VerilogA/src/vsLexer/../../include/vsParser/../vsExpr/vsExpr.H:1987:25: error:
‘m_sChildren’ was not declared in this scope
VerilogA/src/vsLexer/../../include/vsParser/../vsExpr/vsExpr.H:1989:52: error:
there are no arguments to ‘createFromChildren1’ that depend on a template
parameter, so a declaration of ‘createFromChildren1’ must be available
VerilogA/src/vsLexer/../../include/vsParser/../vsExpr/vsExpr.H:1989:52: note:
(if you use ‘-fpermissive’, G++ will accept your code, but allowing the use
of an undeclared name is deprecated)

To make this compileable, 
simply add a 
this-> 
in front of every member object or method:

clone, m_sChildren, createFromChildren1

[Bug c++/48169] compiler is confused about scope

[peterf at silvaco dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

--- Comment #1 from Peter Foelsche <peterf at silvaco dot com> 2011-03-17 15:45:48 UTC ---
Created attachment 23696
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23696
command to call the compiler

[Bug c++/48169] compiler is confused about scope

[peterf at silvaco dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

--- Comment #2 from Peter Foelsche <peterf at silvaco dot com> 2011-03-17 15:46:26 UTC ---
Created attachment 23697
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23697
gzipped compiler log

[Bug c++/48169] compiler is confused about scope

[peterf at silvaco dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

--- Comment #3 from Peter Foelsche <peterf at silvaco dot com> 2011-03-17 15:47:09 UTC ---
Created attachment 23698
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23698
output of "uname -a"

[Bug c++/48169] compiler is confused about scope

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID
           Severity|critical                    |normal

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-03-17 16:02:00 UTC ---
In a template unqualified names are not looked up in dependent base classes

Even if it was a bug, it would not be 'critical' severity, gcc does not crash,
no data is lost.. That field is not meant for you to say "I think this is
really really important"

[Bug c++/48169] compiler is confused about scope

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-03-17 16:08:32 UTC ---
http://womble.decadent.org.uk/c++/template-faq.html#base-lookup

[Bug c++/48169] compiler is confused about scope

[peterf at silvaco dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

--- Comment #6 from Peter Foelsche <peterf at silvaco dot com> 2011-03-17 16:14:27 UTC ---
> In a template unqualified names are not looked up in dependent base classes

Aegypt?!

Then explain to me, why it works for all the other classes and including other
methods inside this class.

[Bug c++/48169] compiler is confused about scope

[peterf at silvaco dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

--- Comment #7 from Peter Foelsche <peterf at silvaco dot com> 2011-03-17 16:18:13 UTC ---
(In reply to comment #6)
> > In a template unqualified names are not looked up in dependent base classes
> 
> Aegypt?!
> 
> Then explain to me, why it works for all the other classes and including other
> methods inside this class.

never mind -- I understand -- sorry about the noise

[Bug c++/48169] compiler is confused about scope

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48169

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-03-17 16:19:07 UTC ---
See the link in comment 5, or this one:
http://clang.llvm.org/compatibility.html#dep_lookup_bases
or this one:
http://www.parashift.com/c++-faq/templates.html#faq-35.19