See the file man1/alc_origin.1.
- BEH structures displayer-debugger
void beh_debug (pnt, type)
- pointer of the structure to be displayed
- name of the structure to be displayed. type can be any of
"befig", "beout", "bereg",
"bemsg", "bepor", "begen",
"berin", "bebus", "beaux",
"bebux", "biabl", "binode",
"beder", "bequad", "abl",
"integer", "long", "short",
"character", "ptype", "chain"
When called, beh_debug()
displaies the structure pointed by pnt
then, prints the line:
and waits for a command being entered by the user. If pnt
is a NULL
pointer or type
doesn´t represent a known structure,
exits without making any action.
To display the structure, beh_debug()
prints a line per field. Fields
containing immediate value (integer, character, string, ...) are displayed in
the following form:
name_of_the_field : value_of_the_field
Fields containing a pointer are marked by the symbol ->
. If the field
contains a NULL pointer, the field is displayed as:
-> name_of_the_field :
In the other case, beh_debug()
-> name_of_the_field : available
Two kinds of command are accepted by the displayer.
A command can be the name of a field containing a pointer. The command is
accepted only if the pointer is not a NULL pointer (field displayed as
"available"). When the debugger receives such a command, it first
pushes the current structure on its stack then, displaies the structure
pointed by the named field.
The second kind of commands are predefined commands :
- to exit from the debugger
- to return to the previous structure
- to put a stop mark on the current structure
- to return to the first structure (pointed by pnt)
- to return to the last structure marked with a stop mark
- to save the current structure in a static table. At most 10 structures may
be saved. (example : "_save 1" saves the current structure in
the entry number ! of the table)
- to jump to a saved structure (example : "_jump 1" dislpaies the
etructure save in the entry number 1 of the table).
- displaies a field under a given format. (example : "_display next
integer" displaies the field named next as an integer).
In addition to these commands, the command .
(dot) can be used to repete
the last command.
struct beout *beout_pnt;
beh_debug (beout_pnt , "beout");
uses an internal stack. The message "stack
is printed if too many structures have been pushed on the
See the file man1/alc_bug_report.1.