C++ and useful error messages

[Gabriel Dos Reis]

Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at> writes:

| I predict that after the release of GCC 3.0 we will see an avalanche of
| bug reports/complaints that g++ fails for the most simple kind of input:
| 
|   #include <vector>
|   class C {
|     vector<int> vi;
|     };
| 
|   % gccvs x.cc
|   x.cc:3: syntax error before `;' token
| 
| Yes, this program is not ISO C++, but still this kind of failure mode
| is hardly acceptable, IMNSHO.

Well, I predict that GCC-3.0 won't be released with the C++ front-end
as currently is :-)  Certainly some work need to be done in the
diagnostics area.  I've (and presumably other C++ guys) been
overworked these last days; hopefully things will slow down.

| (I noticed that the libstdc++ folks do provide a backwards-compatibility
| mode when one includes <vector.h>, not <vector>. Excellent idea!)

Exactly where those headers should be installed and which compiler
flags should turn them on is currently a matter of debate. 

-- Gaby