t0050: Fix merge test on case sensitive file systems

diff --git a/combine-diff.c b/combine-diff.c
index 41aaf83dd315746ae26d1c31ddd78b43c0cb6663..588c58bc55dfe78998d40a4dcce2a7b6ea6f7f5a 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -701,7 +701,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
                else if (0 <= (fd = open(elem->path, O_RDONLY)) &&
                         !fstat(fd, &st)) {
                        size_t len = xsize_t(st.st_size);
-                       size_t sz = 0;
+                       ssize_t done;
                        int is_file, i;
 
                        elem->mode = canon_mode(st.st_mode);
@@ -716,14 +716,13 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
 
                        result_size = len;
                        result = xmalloc(len + 1);
-                       while (sz < len) {
-                               ssize_t done = xread(fd, result+sz, len-sz);
-                               if (done == 0 && sz != len)
-                                       die("early EOF '%s'", elem->path);
-                               else if (done < 0)
-                                       die("read error '%s'", elem->path);
-                               sz += done;
-                       }
+
+                       done = read_in_full(fd, result, len);
+                       if (done < 0)
+                               die("read error '%s'", elem->path);
+                       else if (done < len)
+                               die("early EOF '%s'", elem->path);
+
                        result[len] = 0;
                }
                else {