Re: pspp package FTBFS on armhf

[Ben Pfaff]

On Mon, Aug 18, 2014 at 11:13 AM, Lennart Sorensen
<address@hidden> wrote:
> On Sun, Aug 17, 2014 at 08:19:25AM +0200, Friedrich Beckmann wrote:
>> Dear Ben,
>>
>> Am 15.08.2014 um 16:52 schrieb Ben Pfaff <address@hidden>:
>>
>> > Reading https://dsa.debian.org/doc/guest-account/, one of the
>> > requirements is "People requesting access should already have a track
>> > record of working on Debian for some time."  Do you qualify?
>>
>> I did not do other things in Debian, so I do not qualify. I thought this was
>> the only way to get access to an armhf machine to debug the build problem, 
>> but you
>> proposed and already implemented:
>>
>> > the testsuite.log is often sufficient to debug problems
>>
>> Thank you doing this. In addition Héctor Orón gave me access to 
>> ipa.debian.net so I have
>> another possibility to look into the problem.
>
> Well it seems there is some segfaulting in some of the test cases:
>
> For example test 0485:
>
> Starting program: /root/pspp-0.8.3/src/ui/terminal/.libs/pspp -O format=csv 
> 0485/means-hg.sps
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
> Cannot access memory at address 0x0
>
> Program received signal SIGILL, Illegal instruction.
> 0xb62a5ca8 in ?? () from /usr/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
> (gdb) where
> #0  0xb62a5ca8 in ?? () from /usr/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
> #1  0xb62a390c in OPENSSL_cpuid_setup () from 
> /usr/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
> #2  0xb6fe225e in call_init (l=<optimized out>, argc=4, argv=0xbefffd04, 
> env=0xbefffd18) at dl-init.c:78
> #3  0xb6fe22f0 in _dl_init (main_map=0xb6fff958, argc=4, argv=0xbefffd04, 
> env=0xbefffd18) at dl-init.c:126
> #4  0xb6fd7bf2 in _dl_start_user () from /lib/ld-linux-armhf.so.3
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) continue
> Continuing.
>
> Program received signal SIGSEGV, Segmentation fault.
> variable_matches_case (address@hidden, c=0x0) at src/data/case.c:475
> 475       return (case_idx < caseproto_get_n_widths (c->proto)
> (gdb) where
> #0  variable_matches_case (address@hidden, c=0x0) at src/data/case.c:475
> #1  0xb6e77cda in case_data (address@hidden, v=0x3ea78) at src/data/case.c:267
> #2  0xb6f5de5e in update_n (aux1=0xbefffab8, aux2=0x3eb28, user_data=0x41580, 
> c=<optimized out>, weight=1) at src/language/stats/means.c:917
> #3  0xb6f98ed0 in categoricals_update (cat=0x41060, address@hidden) at 
> src/math/categoricals.c:450
> #4  0xb6f5e438 in run_means (ds=0x2e2b0, input=0x41048, cmd=0xbefffab8) at 
> src/language/stats/means.c:1021
> #5  cmd_means (lexer=<optimized out>, ds=0x2e2b0) at 
> src/language/stats/means.c:784
> #6  0xb6f3b198 in do_parse_command (state=CMD_STATE_DATA, ds=<optimized out>, 
> lexer=0x2e920) at src/language/command.c:233
> #7  cmd_parse_in_state (lexer=0x2e920, ds=0x2e2b0, state=CMD_STATE_DATA) at 
> src/language/command.c:148
> #8  0x000126de in main (argc=<optimized out>, argv=<optimized out>) at 
> src/ui/terminal/main.c:138
> (gdb) list
> 470        Useful in assertions. */
> 471     static bool UNUSED
> 472     variable_matches_case (const struct ccase *c, const struct variable 
> *v)
> 473     {
> 474       size_t case_idx = var_get_case_index (v);
> 475       return (case_idx < caseproto_get_n_widths (c->proto)
> 476               && caseproto_get_width (c->proto, case_idx) == 
> var_get_width (v));
> 477     }
> 478
> 479     /* Internal helper function for case_copy(). */
>
> (Note it is _normal_ to get sigill from openssl and having to continue).
> Normal can be weird.
>
> c is NULL in this call it seems, so dereferencing it seems like a bad idea.

I concluded that it was a compiler bug and avoided it by turning off
compiler optimization on armhf:
http://lists.gnu.org/archive/html/pspp-dev/2014-08/msg00021.html