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Revert "diff-delta.c: allow delta with empty blob."

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This reverts 962537a3eb commit to
play safe.
This commit is contained in:
Junio C Hamano 2005-12-12 16:42:38 -08:00
parent 44db136cad
commit c7a45bd20e
2 changed files with 3 additions and 3 deletions
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4
delta.h
View File

@ -9,8 +9,8 @@ extern void *patch_delta(void *src_buf, unsigned long src_size,
void *delta_buf, unsigned long delta_size,
unsigned long *dst_size);
/* the smallest possible delta size is 2 bytes (empty to empty) */
#define DELTA_SIZE_MIN 2
/* the smallest possible delta size is 4 bytes */
#define DELTA_SIZE_MIN 4
/*
* This must be called twice on the delta data buffer, first to get the

2
diff-delta.c
View File

@ -213,7 +213,7 @@ void *diff_delta(void *from_buf, unsigned long from_size,
bdrecord_t *brec;
bdfile_t bdf;
if (delta_prepare(from_buf, from_size, &bdf))
if (!from_size || !to_size || delta_prepare(from_buf, from_size, &bdf))
return NULL;
outpos = 0;