Exit early when asked to prune an index that contains no entries to begin with. This avoids pointer arithmetic on istate->cache, which is possibly NULL in that case. Found with Clang's UBSan. Signed-off-by: Rene Scharfe <l.s.r@xxxxxx> --- builtin/ls-files.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/builtin/ls-files.c b/builtin/ls-files.c index b8514a0029..adf572da68 100644 --- a/builtin/ls-files.c +++ b/builtin/ls-files.c @@ -362,7 +362,7 @@ static void prune_index(struct index_state *istate, int pos; unsigned int first, last; - if (!prefix) + if (!prefix || !istate->cache_nr) return; pos = index_name_pos(istate, prefix, prefixlen); if (pos < 0) -- 2.13.3
