PSPP-BUG: [bug #19581] Regression Crashes if dependent variable is SYSMIS.

[John Darrington]

URL:
  <http://savannah.gnu.org/bugs/?19581>

                 Summary: Regression Crashes if dependent variable is SYSMIS.
                 Project: PSPP
            Submitted by: jmd
            Submitted on: Thursday 04/12/07 at 09:53
                Category: Numerical Errors
                Severity: 5 - Average
                  Status: None
             Assigned to: jstover
             Open/Closed: Open
         Discussion Lock: Any
                 Release: None

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Details:

I tried the attached file (which takes the log of a negative number, and uses
it as the dependent variable for regression).

Regression doesn't seem to be tolerant of such misuse. It crashes with the
following problem:


Program received signal SIGSEGV, Segmentation fault.
0x08087c6f in run_regression (first=0xbf80a13c, cf=0x8133a48, cmd_=0x8122460,
ds=0x8130138) at src/language/stats/regression.q:1215
1215          for (i = 0; i < X->m->size2; i++)
(gdb) print X->m
$1 = (gsl_matrix *) 0x0
(gdb) bt
#0  0x08087c6f in run_regression (first=0xbf80a13c, cf=0x8133a48,
cmd_=0x8122460, ds=0x8130138) at src/language/stats/regression.q:1215
#1  0x080de97d in multipass_split_output (aux=0xbf80a138, ds=0x8134088) at
src/data/procedure.c:682
#2  0x080de9ef in multipass_split_end_func (aux_=0x0, ds=0x8130138) at
src/data/procedure.c:673
#3  0x080df4db in internal_procedure (ds=0x8130138, proc=<value optimized
out>, end=0x80de9d0 <multipass_split_end_func>, aux=0xbf80a138) at
src/data/procedure.c:231
#4  0x080df55a in multipass_procedure_with_splits (ds=0x8130138,
split=0x80879e0 <run_regression>, func_aux=0x8122460) at
src/data/procedure.c:634
#5  0x080869d3 in cmd_regression (lexer=0x81302c8, ds=0x8130138) at
src/language/stats/regression.q:955
#6  0x0804f75f in cmd_parse_in_state (lexer=0x81302c8, ds=0x8130138,
state=CMD_STATE_DATA) at src/language/command.c:217
#7  0x0804fc36 in cmd_parse (lexer=0x81302c8, ds=0x8130138) at
src/language/command.c:160
#8  0x0804d643 in main (argc=2, argv=0xbf80a304) at
src/ui/terminal/main.c:126
(gdb) 




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File Attachments:


-------------------------------------------------------
Date: Thursday 04/12/07 at 09:53  Name: bug1  Size: 240B   By: jmd

<http://savannah.gnu.org/bugs/download.php?file_id=12468>

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