From: Dmitry Potapov <dpotapov@xxxxxxxxx>
The check whether size is zero was done after if size <= SMALL_FILE_SIZE,
as result, zero size case was never triggered. Instead zero length file
was treated as any other small file. This did not caused any problem, but
if we have a special case for size equal to zero, it is better to make it
work and avoid redundant malloc().
Signed-off-by: Dmitry Potapov <dpotapov@xxxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
sha1_file.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/sha1_file.c b/sha1_file.c
index ff65328..1b551e4 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -2448,6 +2448,8 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object,
else
ret = -1;
strbuf_release(&sbuf);
+ } else if (!size) {
+ ret = index_mem(sha1, NULL, size, write_object, type, path);
} else if (size <= SMALL_FILE_SIZE) {
char *buf = xmalloc(size);
if (size == read_in_full(fd, buf, size))
@@ -2456,12 +2458,11 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object,
else
ret = error("short read %s", strerror(errno));
free(buf);
- } else if (size) {
+ } else {
void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
ret = index_mem(sha1, buf, size, write_object, type, path);
munmap(buf, size);
- } else
- ret = index_mem(sha1, NULL, size, write_object, type, path);
+ }
close(fd);
return ret;
}
--
1.7.1.rc2.333.gb2668
--
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