Re: missinglib: ftbfs [sparc] *** [test] Bus error
On Fri, Dec 23, 2005 at 19:43:50 -0800, Blars Blarson wrote:
> Package: missinglib
> Version: 0.4.10.debian-2
> Severity: serious
> Justification: no longer builds from source
>
> missinglib failed to build on a sparc buildd, duplicated on my sparc
> pbuilder. Please note that some buggy code that casts structures used
> to work no longer works due to changes in gcc.
>
>
>
> ./runtests
> ........................................................
> Ran: 56 tests in: 0.02 seconds.
> OK
> ./runtests.opt
> ........................................................make[2]: *** [test] Bus error
> make[2]: Leaving directory `/build/buildd/missinglib-0.4.10.debian/test'
> make[1]: *** [test] Error 2
> make[1]: Leaving directory `/build/buildd/missinglib-0.4.10.debian'
> make: *** [build-stamp] Error 2
>
>
Hi,
I reproduced this and tried to debug with gdb, but I didn't find any
obvious bug, so I'll cc: debian-sparc for their help.
The bus error seems to happen in caml_format_float (from
byterun/floats.c in the ocaml source); gdb gives the following:
(gdb) run
Starting program: /tmp/missinglib-0.4.10.debian/test/runtests.opt
........................................................
Program received signal SIGBUS, Bus error.
0x0005f698 in caml_format_float ()
(gdb) where
#0 0x0005f698 in caml_format_float ()
#1 0x0006a3ec in caml_c_call ()
0x0005f680 <caml_format_float+240>: call 0x5d110 <caml_stat_alloc>
0x0005f684 <caml_format_float+244>: nop
0x0005f688 <caml_format_float+248>: mov %o0, %l0
0x0005f68c <caml_format_float+252>: mov %l0, %o0
0x0005f690 <caml_format_float+256>: mov %i0, %o1
0x0005f694 <caml_format_float+260>: call 0x7d814 <sprintf>
0x0005f698 <caml_format_float+264>: ldd [ %i1 ], %o2
0x0005f69c <caml_format_float+268>: call 0x5d3d4 <caml_copy_string>
(gdb) p (char*)$o0
$1 = 0xefa8f70e ""
(gdb) p (char*)$o1
$2 = 0xa35b0 "%.2f"
(gdb) p *(double*)$i1
$3 = 0.013319015502929688
Any hint would be appreciated.
Cheers,
Julien Cristau
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