[bug #61073] [groff]: SEGV with a single option as input

[Bjarni Ingi Gislason]

Follow-up Comment #5, bug #61073 (project groff):

  The first sentence in my comment #4 is wrong.

  The segmentation fault should be provoked by lack of font
directories, like those in "GROFF_FONT_PATH" and those defined in
"build/defs.h", FONTPATH.

  I do neither have "GROFF_FONT_PATH" defined nor the directories in
FONTPATH="/usr/local/share/groff/site-font:/usr/local/share/groff/1.22.4/font:/usr/lib/font"

  In "font.cpp" the string "path" gets a pointer "0x6" which can't be
accessed.

  A fix is to give "path" in subroutine "font::load_desc()" in file
"font.cpp" a value

char *path = NULL;

  That results in:

called subprograms:

./groff: error: can't find 'DESC' file in path '(null)'
./groff: fatal error: invalid device 'ps'

  Maybe all declarations of characters need to be given an initial value
that contains a NULL(?) (in C++ files(?)).


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