Re: assertion failed?

[Ben Pfaff]

Looking at the code a little bit, I couldn't quickly find anything that properly
implements changing a variable from numeric to string or vice versa.

John, do you know whether the GUI is supposed to support that? If not,
then we should either implement it or disable it.

On Wed, Jan 8, 2020 at 7:12 PM Alan Mead <address@hidden> wrote:
>
> I was showing my son how to use PSPP to analyze some survey data and I
> crashed PSPP. I'm using GNU pspp 1.2.0-g0fb4db on Windows 7 (yeah, I
> know). This happens reliably for me. A mingw window pops up saying an
> assertion failed:
>
>
>
> The text reads:
>
> Assertion failed!
>
> Program: C:\Program Files\PSPP\bin\PSPPIRE.exe
> File: src/data/case.c, Line 476
>
> Expression: caseproto_get_width(c->proto, case_idx) == var_get_width(v)
>
> Steps to replicate:
>
> *Step 1.* Download this SPSS system file of survey data:
> https://faunalytics.org/wp-content/uploads/2017/04/Faunalytics-Current-Former-Veg-Study-Dataset-All-Respondents-Original-Variables.sav
> (Described on this page:
> https://faunalytics.org/dataset-study-of-current-and-former-vegetarians-and-vegans/)
>
> *Step 2: *Find VEG_RECIDIVISTS_1_SQ001 in the data editor variable view
> (row 66) and change the Type to numeric (leave the default %2.0f)
>
> *Step 3:* Open a new syntax file (File > New > Syntax) and paste these
> two FREQ routines
>
> FREQUENCIES
>     /VARIABLES= VEG_RECIDIVISTS_1_SQ001 to VEG_RECIDIVISTS_1_SQ010
>     /FORMAT=AVALUE TABLE.
>
> FREQUENCIES
>     /VARIABLES= VEGAN_RECIDIVISTS_1_SQ001 to VEGAN_RECIDIVISTS_1_SQ010
>     /FORMAT=AVALUE TABLE.
>
> *Step 4:* Run this syntax twice (Run > all, then Run > all again). The
> assertion pops and PSPPIRE closes when you select Abort.
>
> If you omit Step 2, it doesn't seem to occur, so I guess there's some
> issue changing the type. (I know, BTW, that changing the type is a bad
> idea because it forces all the data in that variable to be missing.)
>
> -Alan
>
> --
>
> Alan D. Mead, Ph.D.
> President, Talent Algorithms Inc.
>
> science + technology = better workers
>
> http://www.alanmead.org
>
>
> A lie can travel half way around the world while the truth is
> putting on its shoes.
>
> -- Mark Twain
>
>