This is with a current CVS Guile (on a GNU/Linux system).
[neil@ossau neil]$ guile
guile> (display-error #f #f #f #f #f #f)
Segmentation fault (core dumped)
[neil@ossau neil]$
The problem arises because scm_display_error does not check that its
port argument actually is a port. I'm not sure what the best fix is,
since it isn't clear -- owing to lack of a docstring -- to what extent
scm_display_error is really supposed to be a public procedure.
(gdb) run
Starting program: /usr/local/bin/guile
guile> (display-error #f #f #f #f #f #f)
Program received signal SIGSEGV, Segmentation fault.
scm_lfwrite (ptr=0x4008bc60 "ERROR", size=5, port=8564) at ports.c:926
926 scm_port *pt = SCM_PTAB_ENTRY (port);
(gdb) bt
#0 scm_lfwrite (ptr=0x4008bc60 "ERROR", size=5, port=8564) at ports.c:926
#1 0x4005fcf0 in scm_puts (s=0x4008bc60 "ERROR", port=8564) at ports.c:920
#2 0x4002ed10 in display_header (source=8564, port=8564) at backtrace.c:105
#3 0x4002f06d in display_error_body (a=0xbfffe818) at backtrace.c:194
...
Regards,
Neil
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