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Revision fa3a0c94dc88567b513e58835e5915f87da40af9 authored by Shawn O. Pearce on 11 February 2009, 18:15:30 UTC, committed by Junio C Hamano on 11 February 2009, 18:25:24 UTC 
Clear the delta base cache if a pack is rebuilt
 
There is some risk that re-opening a regenerated pack file with
different offsets could leave stale entries within the delta base
cache that could be matched up against other objects using the same
"struct packed_git*" and pack offset.

Throwing away the entire delta base cache in this case is safer,
as we don't have to worry about a recycled "struct packed_git*"
matching to the wrong base object, resulting in delta apply
errors while unpacking an object.

Suggested-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 3d20c63
Raw File
test-match-trees.c 
#include "cache.h"
#include "tree.h"

int main(int ac, char **av)
{
	unsigned char hash1[20], hash2[20], shifted[20];
	struct tree *one, *two;

	if (get_sha1(av[1], hash1))
		die("cannot parse %s as an object name", av[1]);
	if (get_sha1(av[2], hash2))
		die("cannot parse %s as an object name", av[2]);
	one = parse_tree_indirect(hash1);
	if (!one)
		die("not a treeish %s", av[1]);
	two = parse_tree_indirect(hash2);
	if (!two)
		die("not a treeish %s", av[2]);

	shift_tree(one->object.sha1, two->object.sha1, shifted, -1);
	printf("shifted: %s\n", sha1_to_hex(shifted));

	exit(0);
}
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