Re: [Tinycc-devel] standalone backtraces

[Michael Matz]

Hi,

On Sun, 19 Jan 2020, grischka wrote:

> Herman ten Brugge wrote:
> >  I need only 1. I modified the code. See attached patch.
>
> I don't think so.
>
> Basically, in tinycc, before you add new code, always try if you
> can solve the problem by just removing old code first.
>
> (Also, please don't make changes to existing code without any
> comments, unless really obvious for everybody).
>
> Anyway, should work now. See
> https://repo.or.cz/tinycc.git/commitdiff/d79e1dee
>
> > >  Btw, there seems to be a bug in the sym-version code that crashes
> > >  tcc when it tries to link with a .so, for example:
> > >
> > >      echo "void f() {}" | tcc - -shared -o a.so
> > >      echo "main() {}" | tcc - a.so
> > >      <segmentation fault>
>
> >  I cannot reproduce this. I checkout a fresh copy and see no problem.
> >  I use Fedora 31 with all updates.

> see for example
>   https://gitlab.com/giomasce/tinycc/-/jobs/408014593
>
>  +./a.exe: error while loading shared libraries: ./a1.so: unsupported
>  version
>    25960 of Verneed record

Fixed in https://repo.or.cz/tinycc.git/commitdiff/fdeeb62

Also the stack usage for nested expressions you noted in the 
d79e1dee commit might be be a bit smaller now, I've reworked the 
expression parser to be a precedence parser for the easy cases, so there's 
now only one recursion level per higher precedence operator.  Of course 
it's still possible to write expression that need unbounded recursion 
depth.


Ciao,
Michael.

> --- grischka
>
> >  Regards,
> >
> >      Herman
>
> _______________________________________________
> Tinycc-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/tinycc-devel