doc hash-function-transition: clarify how older gits die on NewHash

diff --git a/diff-delta.c b/diff-delta.c
index 3797ce6041981d1facda44d3a95d4448dbb8a091..e49643353bf56807b3d4ac4011784b5d8dd6f7a4 100644 (file)
--- a/diff-delta.c
+++ b/diff-delta.c
@@ -319,7 +319,9 @@ create_delta(const struct delta_index *index,
             const void *trg_buf, unsigned long trg_size,
             unsigned long *delta_size, unsigned long max_size)
 {
-       unsigned int i, outpos, outsize, moff, msize, val;
+       unsigned int i, val;
+       off_t outpos, moff;
+       size_t l, outsize, msize;
        int inscnt;
        const unsigned char *ref_data, *ref_top, *data, *top;
        unsigned char *out;
@@ -336,20 +338,20 @@ create_delta(const struct delta_index *index,
                return NULL;
 
        /* store reference buffer size */
-       i = index->src_size;
-       while (i >= 0x80) {
-               out[outpos++] = i | 0x80;
-               i >>= 7;
+       l = index->src_size;
+       while (l >= 0x80) {
+               out[outpos++] = l | 0x80;
+               l >>= 7;
        }
-       out[outpos++] = i;
+       out[outpos++] = l;
 
        /* store target buffer size */
-       i = trg_size;
-       while (i >= 0x80) {
-               out[outpos++] = i | 0x80;
-               i >>= 7;
+       l = trg_size;
+       while (l >= 0x80) {
+               out[outpos++] = l | 0x80;
+               l >>= 7;
        }
-       out[outpos++] = i;
+       out[outpos++] = l;
 
        ref_data = index->src_buf;
        ref_top = ref_data + index->src_size;
@@ -452,6 +454,9 @@ create_delta(const struct delta_index *index,
                        moff += msize;
                        msize = left;
 
+                       if (moff > 0xffffffff)
+                               msize = 0;
+
                        if (msize < 4096) {
                                int j;
                                val = 0;