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cameo/ops.c (tool_comp_paths): don't crash if path list is empty
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@ -1,8 +1,8 @@
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/*
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* ops.c - Higher-level toolpath operations
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*
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* Written 2010-2012 by Werner Almesberger
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* Copyright 2010-2012 Werner Almesberger
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* Written 2010-2013 by Werner Almesberger
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* Copyright 2010-2013 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -49,6 +49,8 @@ struct path *tool_comp_paths(const struct path *paths, int dog_bone,
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* explicitly tell cameo to treat the path as an outside edge.
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*/
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if (!paths)
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return NULL;
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leftmost = path_find_leftmost(paths);
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for (path = paths; path; path = path->next)
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if (path != leftmost && (all_inside || !path->outside)) {
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