t4000: make hash size independent

diff --git a/t/helper/test-delta.c b/t/helper/test-delta.c
index 34c7259248760ff8bdea495ac5effd5de2b04ae3..e749a49c88e66e4b3ce388b2c0762d36d4090f99 100644 (file)
--- a/t/helper/test-delta.c
+++ b/t/helper/test-delta.c
@@ -34,8 +34,8 @@ int cmd__delta(int argc, const char **argv)
                return 1;
        }
        from_size = st.st_size;
-       from_buf = mmap(NULL, from_size, PROT_READ, MAP_PRIVATE, fd, 0);
-       if (from_buf == MAP_FAILED) {
+       from_buf = xmalloc(from_size);
+       if (read_in_full(fd, from_buf, from_size) < 0) {
                perror(argv[2]);
                close(fd);
                return 1;
@@ -48,8 +48,8 @@ int cmd__delta(int argc, const char **argv)
                return 1;
        }
        data_size = st.st_size;
-       data_buf = mmap(NULL, data_size, PROT_READ, MAP_PRIVATE, fd, 0);
-       if (data_buf == MAP_FAILED) {
+       data_buf = xmalloc(data_size);
+       if (read_in_full(fd, data_buf, data_size) < 0) {
                perror(argv[3]);
                close(fd);
                return 1;