From a25fd0d4bd3cf652e55c24e7dc873fe530fa111a Mon Sep 17 00:00:00 2001 From: Thomas Hindoe Paaboel Andersen Date: Mon, 16 Dec 2013 23:35:30 +0100 Subject: [PATCH] journal-file: protect against alloca(0) --- src/journal/journal-file.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c index 090cf97..8ea258b 100644 --- a/src/journal/journal-file.c +++ b/src/journal/journal-file.c @@ -2737,7 +2737,8 @@ int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint6 ts.realtime = le64toh(o->entry.realtime); n = journal_file_entry_n_items(o); - items = alloca(sizeof(EntryItem) * n); + /* alloca() can't take 0, hence let's allocate at least one */ + items = alloca(sizeof(EntryItem) * MAX(1u, n)); for (i = 0; i < n; i++) { uint64_t l, h;