[fpc-pascal] Building trunk

[Sven Barth]

Am Sa., 24. Nov. 2018, 10:09 hat C Western <l at c-m-w.me.uk> geschrieben:

> On 23/11/2018 09:50, Sven Barth via fpc-pascal wrote:
> > Am Fr., 23. Nov. 2018, 10:26 hat C Western <l at c-m-w.me.uk
> > <mailto:l at c-m-w.me.uk>> geschrieben:
> >
> >     I haven't been able to build trunk i386 fpc for a couple of weeks. Is
> >     this supposed to be working, or have I misconfigured something? (I
> >     don't
> >     think I have changed anything.) The output is below. I don't think
> >     it is
> >     significant, but I am building on a 64 bit system, but with a 32 bit
> >     starting compiler. (The 64 bit build with the 64 bit starting
> >     compiler
> >     works fine.)
> >
> >
> > We have i386 trunk building on at least one x86_64-linux machine, so
> > it can't be a principal problem. :/
> > Could you check whether it's FPC itself that segfaults or something
> > else and if the former try to retrieve a stacktrace, please?
> >
> > Regards,
> > Sven
> >
> > _______________________________________________
> > fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org
> > http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
>
> Looks like the ppc1 compiler crashes during setup:
>
> gdb) run
> Starting program: /home/me/fpc/trunk/fpcsrc/compiler/ppc1
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x08068760 in INITTLS () at system.pp:543
> 543            case phdr^.p_type of
> (gdb) bt
> #0  0x08068760 in INITTLS () at system.pp:543
> #1  0x082a63fb in _FPC_PROC_START () at ./i386/si_prc.inc:105
> (gdb) p phdr
> $1 = (PPHDR) 0x8048034
> (gdb) p phdr^
> Cannot access memory at address 0x8048034
>

Looks like something related to the new threadvar handling. Though by
default that shouldn't be enabled... 🤔

Regards,
Sven

>
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