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-rw-r--r--toys/posix/ps.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/toys/posix/ps.c b/toys/posix/ps.c
index fd9b54bc..8ee68ad6 100644
--- a/toys/posix/ps.c
+++ b/toys/posix/ps.c
@@ -1417,7 +1417,7 @@ static void top_common(
mix.count = 0;
while (old.count || new.count) {
- struct carveup *otb = *old.tb, *ntb = *new.tb;
+ struct carveup *otb = old.tb ? *old.tb : 0, *ntb = new.tb ? *new.tb : 0;
// If we just have old for this process, it exited. Discard it.
if (old.count && (!new.count || *otb->slot < *ntb->slot)) {