diff options
Diffstat (limited to 'eqn_term.c')
| -rw-r--r-- | eqn_term.c | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -1,7 +1,7 @@ /* $Id$ */ /* * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> - * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org> + * Copyright (c) 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -68,8 +68,10 @@ eqn_box(struct termp *p, const struct eqn_box *bp) if (bp->pos == EQNPOS_SQRT) { term_word(p, "sqrt"); - p->flags |= TERMP_NOSPACE; - eqn_box(p, bp->first); + if (bp->first != NULL) { + p->flags |= TERMP_NOSPACE; + eqn_box(p, bp->first); + } } else if (bp->type == EQN_SUBEXPR) { child = bp->first; eqn_box(p, child); @@ -93,7 +95,8 @@ eqn_box(struct termp *p, const struct eqn_box *bp) } } else { child = bp->first; - if (bp->type == EQN_MATRIX && child->type == EQN_LIST) + if (bp->type == EQN_MATRIX && + child != NULL && child->type == EQN_LIST) child = child->first; while (child != NULL) { eqn_box(p, |