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frame-source available in default environment

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* libguile/frames.c (scm_frame_source): Don't call out to (system vm
  frames), as this routine is used when printing exceptions.  Make
  available in the default environment (ugh).

* module/system/vm/frame.scm: Remove frame-source definition and
  export.
This commit is contained in:
Andy Wingo 2011-02-11 12:43:05 +01:00
parent 7948811252
commit 423fca76e6
2 changed files with 12 additions and 17 deletions
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19
libguile/frames.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2001, 2009, 2010 Free Software Foundation, Inc.
/* Copyright (C) 2001, 2009, 2010, 2011 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -92,17 +92,18 @@ SCM_DEFINE (scm_frame_arguments, "frame-arguments", 1, 0, 0,
}
#undef FUNC_NAME
SCM
scm_frame_source (SCM frame)
SCM_DEFINE (scm_frame_source, "frame-source", 1, 0, 0,
(SCM frame),
"")
#define FUNC_NAME s_scm_frame_source
{
static SCM var = SCM_BOOL_F;
if (scm_is_false (var))
var = scm_c_module_lookup (scm_c_resolve_module ("system vm frame"),
"frame-source");
SCM_VALIDATE_VM_FRAME (1, frame);
return scm_call_1 (SCM_VARIABLE_REF (var), frame);
return scm_program_source (scm_frame_procedure (frame),
scm_frame_instruction_pointer (frame),
SCM_UNDEFINED);
}
#undef FUNC_NAME
/* The number of locals would be a simple thing to compute, if it weren't for
the presence of not-yet-active frames on the stack. So we have a cheap