Availability:C-language interface function
void PL_backtrace(int
depth, int flags)Dump a Prolog backtrace to the user_error stream. Depth
is the number of frames to dump. Flags is a bitwise or of the
following constants:
- PL_BT_SAFE
- (0x1) Do not try to print goals. Instead, just print the
predicate name and arity. This reduces the likelihood to crash if
PL_backtrace()
is called in a damaged environment.
- PL_BT_USER
- (0x2) Only show‘user’frames. Default is to also show frames
of hidden built-in predicates.