Re: ghc 4.02 compilation failure (linux i386 glibc)

[Giuliano P Procida]

Hello again.

On Fri, May 14, 1999 at 07:16:57AM -0700, Sigbjorn Finne (Intl Vendor) wrote:
> Other than that, I'm generally stumped as to why this is happening.
> You could try to run 'hsc' from within gdb to see where it is failing
> - compile PrelBase.o with -v to see the (long!) command-line that
> hsc gets passed.

OK, I ran again with gdb (just on the hsc invocation):

(gdb) bt
#0  0x40086981 in fflush ()
#1  0x85496a4 in   ()

Disassembly reveals:

08549690 <shutdownHaskell>:
 8549690:       e8 4b 26 00 00          call   854bce0 <finaliseWeakPointersNow>
 8549695:       e8 26 23 00 00          call   854b9c0 <exitStorage>
 854969a:       68 f0 32 5d 08          pushl  $0x85d32f0
 854969f:       e8 d0 f9 af ff          call   8049074 <_init+0x114>
 85496a4:       83 c4 04                addl   $0x4,%esp
 85496a7:       c3                      ret    

08048f94 <.plt>:
 8049074:       ff 25 fc 30 5d 08       jmp    *0x85d30fc

(gdb) printf "%p\n" , (* 0x85d30fc)
0x40086920

plt seems to be the C library's entry table and the address does
correspond to fflush. I can only assume 0x85d32f0 is supposed to be a
FILE *. (sfx: installs debugging C lib) Now I just have to look at:

(gdb) bt
#0  0x40066981 in _IO_fflush (fp=0x85d32f0) at iofflush.c:41
#1  0x85496a4 in   ()

tomorrow. There have been other SEGV problems reported to the Debian BTS
with regard to IO troubles with glibc2.1 (but that was C++). I'll report
this as well. Can someone confirm that the shutdownHaskell thingum is
not being silly?

BTW, this problem occurs when hsc is linked together and used for the
first time.

Giuliano.