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-rw-r--r--libguile/backtrace.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libguile/backtrace.c b/libguile/backtrace.c
index db22c17e9..a9b37fd7c 100644
--- a/libguile/backtrace.c
+++ b/libguile/backtrace.c
@@ -511,7 +511,7 @@ display_backtrace_body (struct display_backtrace_args *a)
static SCM
error_during_backtrace (void *data, SCM tag, SCM throw_args)
{
- SCM port = PTR2SCM (data);
+ SCM port = SCM_PACK_POINTER (data);
scm_puts ("Exception thrown while printing backtrace:\n", port);
scm_print_exception (port, SCM_BOOL_F, tag, throw_args);
@@ -544,7 +544,7 @@ SCM_DEFINE (scm_display_backtrace_with_highlights, "display-backtrace", 2, 3, 0,
scm_internal_catch (SCM_BOOL_T,
(scm_t_catch_body) display_backtrace_body, &a,
- (scm_t_catch_handler) error_during_backtrace, SCM2PTR (port));
+ (scm_t_catch_handler) error_during_backtrace, SCM_UNPACK_POINTER (port));
return SCM_UNSPECIFIED;
}