Re: [Tinycc-devel] segmentation fault on any code compiled by tcc with glibc 2.21

[Michael Matz]

Hi,

On Tue, 15 Dec 2015, Vincent Lefevre wrote:

> > With glibc 2.21 (Debian/unstable on x86_64), on any code compiled by 
> > tcc segfaults. This occurs with both old tcc (tcc 
> > 0.9.27~git20140923.9d7fb33-3 Debian package) and mob. I wonder whether 
> > this is a bug in tcc or in the glibc.
>
> According to Aurelien Jarno, this is actually due to new binutils 
> relocations (and the Debian glibc 2.21-4 package is built with a recent 
> binutils, hence the problem with it).
>
> Details:
>
>  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808008#22

Blaeh.  I didn't consider the case of the libc runtime startup .o files 
when agreeing to the new relocs.  Arguably those object files exposed to 
every linker trying to create user-space programs shouldn't use the new 
relocs (they provide a very minor performance benefit sometimes) even 
with new binutils (and so that's a QoI issue in glibc), but it's easy 
enough to deal with them in tcc.

Try newest mob again.


Ciao,
Michael.