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....@web.de>
---
Messed up whitespace when sending this the first time.
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
