This bug is present only in hppa and m68k architectures, see

https://buildd.debian.org/status/fetch.php?pkg=theme-d&arch=hppa&ver=4.1.0-2&stamp=1640945222&raw=0

and

https://buildd.debian.org/status/fetch.php?pkg=theme-d&arch=m68k&ver=4.1.0-2&stamp=1640945363&raw=0

The backtrace in those logs contains the following lines:

In theme-d/translator/theme-d-representation.scm:
   2275:0  2 (_)
In theme-d/translator/theme-d-entities.scm:
    297:2  1 (tno-field-set! 1 type #(#(#(#t "hrecord-type" 5 …) …) …))

See https://salsa.debian.org/tohoyn-guest/theme-d/-/blob/master/theme-d/translator/theme-d-representation.scm.in for theme-d-representation.scm.

Now the call argument to procedure tno-field-set! in line 2275 is tc-pair-fields, which is initialized to a list in line 1356.  However, the backtrace shows that the value of this argument is 1.

     - Tommi Höynälänmaa

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