refs: document do_for_each_ref() and do_one_ref()

diff --git a/archive-tar.c b/archive-tar.c
index dc91c6b50d56ad8fd9921d0e47f5b45cafdcfc4d..d1cce46e3310d64af32b231de697449ae90ddccf 100644 (file)
--- a/archive-tar.c
+++ b/archive-tar.c
@@ -139,13 +139,13 @@ static void strbuf_append_ext_header(struct strbuf *sb, const char *keyword,
 
 static unsigned int ustar_header_chksum(const struct ustar_header *header)
 {
-       const char *p = (const char *)header;
+       const unsigned char *p = (const unsigned char *)header;
        unsigned int chksum = 0;
-       while (p < header->chksum)
+       while (p < (const unsigned char *)header->chksum)
                chksum += *p++;
        chksum += sizeof(header->chksum) * ' ';
        p += sizeof(header->chksum);
-       while (p < (const char *)header + sizeof(struct ustar_header))
+       while (p < (const unsigned char *)header + sizeof(struct ustar_header))
                chksum += *p++;
        return chksum;
 }
@@ -153,6 +153,8 @@ static unsigned int ustar_header_chksum(const struct ustar_header *header)
 static size_t get_path_prefix(const char *path, size_t pathlen, size_t maxlen)
 {
        size_t i = pathlen;
+       if (i > 1 && path[i - 1] == '/')
+               i--;
        if (i > maxlen)
                i = maxlen;
        do {