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saving and restoring the error stack trace

From: Marco Maggi
Subject: saving and restoring the error stack trace
Date: Thu, 24 Aug 2006 21:34:35 +0200


  I am interfacing the GSL ordinary differential
equations solver with Guile. I have the following
stack of invocations:


If an error occurs in the invocation of
my-other-scheme-impl-scheme-function I want a
full stack trace of the error be shown to the
user that invoked my-scheme-implemented-scheme-function
at the REPL.

I cannot let the dynwind mechanism pass through
gsl_odeiv_evolve_apply, that is why I am using
scm_internal_catch. But in this way if I rethrow
the exception in my-C-implemented-scheme-function
I loose the stack trace that includes the body
of my-other-scheme-impl-scheme-function.

For the ones that know how Tcl works: what I want
is the same as saving the "errorInfo" global variable
and restoring it later.

Is there a way?

Marco Maggi

"They say jump!, you say how high?"
Rage Against the Machine - "Bullet in the Head"

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