[Bug c++/26058] [4.0/4.1/4.2 Regression] C++ error recovery regression

[mmitchel at gcc dot gnu dot org]

------- Comment #3 from mmitchel at gcc dot gnu dot org  2006-05-31 04:54 -------
There is no way to win here.

The EDG front end skips the entire rest of the file:

==
"pr26058.cpp", line 4: error: expected a ";"
    int t2() {}
             ^

At end of source: warning: parsing restarts here after previous syntax error

At end of source: warning: missing return statement at end of non-void
          function "t1"

At end of source: error: expected a "}"
==

That's quieter, but it also means that it issues no error message about the
bogus use of "i" in:

  int t1() {
  { // unclosed brace                                                           
  }
  int t2() {}
  if (i) ;

It's not a good idea to pop back to the top level because function declarations
are perfectly legal in function scope; it's just not legal to have a
definition.

So, the realistic choices are the EDG approach of just skipping to the end of
the current block (which may be the end of the file), or the current behavior. 
I think the current behavior is better.

I've also marked this P5, so that if someone decides to reopen the bug it will
at least be clear that this is not a release-critical problem.


-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
           Priority|P3                          |P5
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26058