Re: [Tinycc-devel] differences.html

[Rob Landley]

On Wednesday 29 August 2007 4:34:35 am Peter Lund wrote:
> On Sat, 2007-08-18 at 01:40 -0500, Rob Landley wrote:
> > So I started a list of differences between tcc and gcc.  (Not just
> > unfixed bugs but things that are likely to remain different.)
> >
> > http://landley.net/code/tinycc/differences.html
>
> Evaluating arguments in the order of last to first would allow more
> broken programs to work.  I'm thinking of programs that don't specify
> proper prototypes for functions with a variable number of arguments.

*shrug*  If you're going to use varags, use a prototype.  Otherwise trying to 
make that work sounds too brittle for words.  (Code that breaks obviously 
enough can be debugged.)

> Other differences just off the top of my head:
>
> command-line parameters,

I've got some in my wrapper script that I might add.  In the short term, I 
might try using the wrapper script around tcc and see what happens. :)

> dependency generation (spitting out the names 
> of the include files transitively included in a compilation unit,
> possibly minus system headers), 

Patches welcome. :)

> I think the handling of extra include 
> file directories was rather different last I looked,

In what way?

> some differences in 
> the handling of typedefs and structs especially in the face of forward
> declarations and incomplete types.

Details, please?  (I'm aware there are problems here, but my notes are buried 
somewhere and highly unlikely to be complete anyway...)

I believe I've hit programs breaking in this area...

> -Peter

Rob
-- 
"One of my most productive days was throwing away 1000 lines of code."
  - Ken Thompson.