[Bug c++/33495] New: [4.1/4.2/4.3 regression] Broken diagnostic: Trouble pretty-printing statement expressions

["reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The C++ frontend generates a broken diagnostic for the following code
snippet since GCC 4.0.0:

==============================================
void foo()
{
  if (({while(true);}))
    ;
}
==============================================

bug.cc: In function 'void foo()':
bug.cc:3: error: could not convert '#'while_stmt' not supported by
dump_expr#<expression error>' to 'bool'

This is completely broken since we try to print a *_stmt via dump_expr.
There are lots of other testcases with other statements like "if", "for",
"break" etc.


-- 
           Summary: [4.1/4.2/4.3 regression] Broken diagnostic: Trouble
                    pretty-printing statement expressions
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: diagnostic, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33495