The offset of an object in the pack is recorded as a 4-byte integer
in the index file. When reading the offset from the mmap'ed index
in prepare_pack_revindex(), the address is dereferenced as a long*.
This works fine as long as the long type is four bytes wide. On
NetBSD/sparc64, however, a long is 8 bytes wide and so dereferencing
the offset produces garbage.
Signed-off-by: Dennis Stosberg <dennis@xxxxxxxxxxxx>
---
I am not sure whether an int cast or an int32_t cast is more
appropriate here. An int is not guaranteed to be four bytes wide,
but I don't know of any modern platform where that's not the case.
On the other hand int32_t is not necessarily available before C99.
Any opinions? I wonder why no one has hit this on x86_64...
pack-objects.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
026b1b2cdd5332f59e15cd8611a49ead3094d08c
diff --git a/pack-objects.c b/pack-objects.c
index 523a1c7..29bda43 100644
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -156,7 +156,7 @@ static void prepare_pack_revindex(struct
rix->revindex = xmalloc(sizeof(unsigned long) * (num_ent + 1));
for (i = 0; i < num_ent; i++) {
- long hl = *((long *)(index + 24 * i));
+ long hl = *((int *)(index + 24 * i));
rix->revindex[i] = ntohl(hl);
}
/* This knows the pack format -- the 20-byte trailer
--
1.3.2.gbe65
-
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