Merge branch 'ds/avoid-overflow-in-midpoint-computation'

Code clean-up.

* ds/avoid-overflow-in-midpoint-computation:
  cleanup: fix possible overflow errors in binary search

3 files changed, 4 insertions, 4 deletions

diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index f2be145e12..8ec459f522 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -633,7 +633,7 @@ static int find_ofs_delta(const off_t offset, enum object_type type)
 	int first = 0, last = nr_ofs_deltas;
 
 	while (first < last) {
-		int next = (first + last) / 2;
+		int next = first + (last - first) / 2;
 		struct ofs_delta_entry *delta = &ofs_deltas[next];
 		int cmp;
 
@@ -687,7 +687,7 @@ static int find_ref_delta(const unsigned char *sha1, enum object_type type)
 	int first = 0, last = nr_ref_deltas;
 
 	while (first < last) {
-		int next = (first + last) / 2;
+		int next = first + (last - first) / 2;
 		struct ref_delta_entry *delta = &ref_deltas[next];
 		int cmp;
 
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 5ee2c48ffb..6e77dfd444 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -1277,7 +1277,7 @@ static int done_pbase_path_pos(unsigned hash)
 	int lo = 0;
 	int hi = done_pbase_paths_num;
 	while (lo < hi) {
-		int mi = (hi + lo) / 2;
+		int mi = lo + (hi - lo) / 2;
 		if (done_pbase_paths[mi] == hash)
 			return mi;
 		if (done_pbase_paths[mi] < hash)
diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
index 689a29fac1..62ea264c46 100644
--- a/builtin/unpack-objects.c
+++ b/builtin/unpack-objects.c
@@ -394,7 +394,7 @@ static void unpack_delta_entry(enum object_type type, unsigned long delta_size,
 		lo = 0;
 		hi = nr;
 		while (lo < hi) {
-			mid = (lo + hi)/2;
+			mid = lo + (hi - lo) / 2;
 			if (base_offset < obj_list[mid].offset) {
 				hi = mid;
 			} else if (base_offset > obj_list[mid].offset) {