doc/fast-import: clarify how content states are built

diff --git a/fsck.c b/fsck.c
index 4c63b2cc41eec4f568ee6f0d18a51c97304d5d96..7395ef6a425f5c7725767f34a0383f61907fce93 100644 (file)
--- a/fsck.c
+++ b/fsck.c
@@ -139,6 +139,7 @@ static int verify_ordered(unsigned mode1, const char *name1, unsigned mode2, con
 static int fsck_tree(struct tree *item, int strict, fsck_error error_func)
 {
        int retval;
+       int has_null_sha1 = 0;
        int has_full_path = 0;
        int has_empty_name = 0;
        int has_zero_pad = 0;
@@ -157,9 +158,12 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func)
        while (desc.size) {
                unsigned mode;
                const char *name;
+               const unsigned char *sha1;
 
-               tree_entry_extract(&desc, &name, &mode);
+               sha1 = tree_entry_extract(&desc, &name, &mode);
 
+               if (is_null_sha1(sha1))
+                       has_null_sha1 = 1;
                if (strchr(name, '/'))
                        has_full_path = 1;
                if (!*name)
@@ -207,6 +211,8 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func)
        }
 
        retval = 0;
+       if (has_null_sha1)
+               retval += error_func(&item->object, FSCK_WARN, "contains entries pointing to null sha1");
        if (has_full_path)
                retval += error_func(&item->object, FSCK_WARN, "contains full pathnames");
        if (has_empty_name)