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xdiff: handle allocation failure when merging 

Other users of xdiff such as libgit2 need to be able to handle
allocation failures. These allocation failures were previously
ignored.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Phillip Wood 2022-02-16 10:15:09 +00:00 committed by Junio C Hamano
parent 4a37b80e88
commit 43ad3af380
1 changed files with 6 additions and 1 deletions
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7
xdiff/xmerge.c
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@ -708,13 +708,18 @@ int xdl_merge(mmfile_t *orig, mmfile_t *mf1, mmfile_t *mf2,
xdl_build_script(&xe2, &xscr2) < 0)
goto out;
status = 0;
if (!xscr1) {
result->ptr = xdl_malloc(mf2->size);
if (!result->ptr)
goto out;
status = 0;
memcpy(result->ptr, mf2->ptr, mf2->size);
result->size = mf2->size;
} else if (!xscr2) {
result->ptr = xdl_malloc(mf1->size);
if (!result->ptr)
goto out;
status = 0;
memcpy(result->ptr, mf1->ptr, mf1->size);
result->size = mf1->size;
} else {