guile-knots/tests/backtraces/wrapped-exception.scm

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(use-modules (knots))
;; FIRST BACKTRACE ENTRY: 1762:12 (with-exception-handler
(with-exception-handler
(lambda (exn)
(print-backtrace-and-exception/knots exn)
(primitive-exit 1))
(lambda ()
(with-exception-handler
(lambda (exn)
(raise-exception
(make-exception
exn
(make-knots-exception (make-stack #t)))))
(lambda ()
(error "wrapped error message"))))) ; LAST BACKTRACE ENTRY HERE