diff options
| -rw-r--r-- | builtin-apply.c | 3 | ||||
| -rwxr-xr-x | t/t4123-apply-shrink.sh | 58 |
2 files changed, 60 insertions, 1 deletions
diff --git a/builtin-apply.c b/builtin-apply.c index 25b144790..976ec7704 100644 --- a/builtin-apply.c +++ b/builtin-apply.c @@ -1514,7 +1514,8 @@ static int find_offset(const char *buf, unsigned long size, const char *fragment } /* Exact line number? */ - if (!memcmp(buf + start, fragment, fragsize)) + if ((start + fragsize <= size) && + !memcmp(buf + start, fragment, fragsize)) return start; /* diff --git a/t/t4123-apply-shrink.sh b/t/t4123-apply-shrink.sh new file mode 100755 index 000000000..984157f03 --- /dev/null +++ b/t/t4123-apply-shrink.sh @@ -0,0 +1,58 @@ +#!/bin/sh + +test_description='apply a patch that is larger than the preimage' + +. ./test-lib.sh + +cat >F <<\EOF +1 +2 +3 +4 +5 +6 +7 +8 +999999 +A +B +C +D +E +F +G +H +I +J + +EOF + +test_expect_success setup ' + + git add F && + mv F G && + sed -e "s/1/11/" -e "s/999999/9/" -e "s/H/HH/" <G >F && + git diff >patch && + sed -e "/^\$/d" <G >F && + git add F + +' + +test_expect_success 'apply should fail gracefully' ' + + if git apply --index patch + then + echo Oops, should not have succeeded + false + else + status=$? + echo "Status was $status" + if test -f .git/index.lock + then + echo Oops, should not have crashed + false + fi + fi +' + +test_done |