Availability:C-language interface function
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 likelyhood 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.