view mercurial/mpatch.h @ 39422:adacefb0b7ea stable

dirstate: use tuple interface to fix leak in pack_dirstate()

Spotted by ASAN.

Unlike PyTuple_GET_ITEM(), PySequence_ITEM() returns a new reference. This
bug could be fixed by inserting Py_CLEAR() and Py_XDECREF() appropriately,
but I think requiring a tuple object is simpler and less error-prone.

The cext version is jumped to 10 since 6..9 are used in the default branch.
We'll need to bump it again at merge.

#ifndef _HG_MPATCH_H_
#define _HG_MPATCH_H_

#define MPATCH_ERR_NO_MEM -3
#define MPATCH_ERR_CANNOT_BE_DECODED -2
#define MPATCH_ERR_INVALID_PATCH -1

struct mpatch_frag {
	int start, end, len;
	const char *data;
};

struct mpatch_flist {
	struct mpatch_frag *base, *head, *tail;
};

int mpatch_decode(const char *bin, ssize_t len, struct mpatch_flist **res);
ssize_t mpatch_calcsize(ssize_t len, struct mpatch_flist *l);
void mpatch_lfree(struct mpatch_flist *a);
int mpatch_apply(char *buf, const char *orig, ssize_t len,
                 struct mpatch_flist *l);
struct mpatch_flist *
mpatch_fold(void *bins, struct mpatch_flist *(*get_next_item)(void *, ssize_t),
            ssize_t start, ssize_t end);

#endif