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fix segfault bug #1

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fix segfault bug #1

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6 changes: 6 additions & 0 deletions shull.c
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Original file line number Diff line number Diff line change
Expand Up @@ -192,6 +192,12 @@ void add_point_to_hull(sh_triangulation_data *td, sh_point *p) { /*{{{*/
first_hid = ll_cut_after(last_vis);
last_hid = ll_cut_before(first_vis);
} /*}}}*/
if (first_vis==NULL)
{
fprintf(stderr, "Error, cannot find hull edges visisble to the point to add\n");
fprintf(stderr, " probably the point set contains duplicate points\n");
exit(1);
}
sh_edge *e0 = NULL;
sh_edge *e1 = NULL;
for (ll_node *n=first_vis; n!=NULL; n=NEXT(n)) { /*{{{*/
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