Update of bug #67978 (group groff):
Status: None => Confirmed
Assigned to: None => gbranden
_______________________________________________________
Follow-up Comment #2:
[comment #0 original submission:]
> In the 1990ies it was well-known that you could crash many programs by
> giving them garbage (a.k.a. "random") input. This technique uncovered
> many bugs that would also occur on valid (but rarely seen) input.
> Later this technique evolved into "fuzzing".
The technique may be even older; I recall Doug McIlroy mentioning it as being
employed at the Bell Labs CSRC. I believe he said so either on the _groff_
list or Warren Toomey's TUHS list.
I used it myself as recently as November.
https://cgit.git.savannah.gnu.org/cgit/groff.git/commit/?id=158b0d973e6e802558b7a4611fc56c52bd8864e9
Can reproduce:
$ ./build/test-groff -Ww -z ~/src/sed-4.8.tar.xz 2>&1 | tail
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: cannot format glyph: no
current font
troff:/home/branden/src/sed-4.8.tar.xz:4026: error: ignoring invalid numeric
expression starting with character code 225
/home/branden/src/GIT/groff/build/groff: error: troff: Segmentation fault
(core dumped)
Will investigate.
_______________________________________________________
Reply to this item at:
<https://savannah.gnu.org/bugs/?67978>
_______________________________________________
Message sent via Savannah
https://savannah.gnu.org/
signature.asc
Description: PGP signature
