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blame: prevent a segv when -L given start > EOF

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blame would segv if given -L <lineno> with <lineno> past the end of the file.
While we're fixing the bug, add test cases for an invalid <start> when called
as -L <start>,<end> or -L<start>.

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jay Soffian 2010-02-08 22:48:13 -05:00 committed by Junio C Hamano
parent 153559a964
commit 92f9e273e8
2 changed files with 9 additions and 1 deletions
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2
builtin-blame.c
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@ -2432,7 +2432,7 @@ parse_done:
if (top < 1)
top = lno;
bottom--;
if (lno < top)
if (lno < top || lno < bottom)
die("file %s has only %lu lines", path, lno);
ent = xcalloc(1, sizeof(*ent));

8
t/t8003-blame.sh
View File

@ -157,4 +157,12 @@ EOF
git --no-pager blame $COMMIT -- uno >/dev/null
'
test_expect_success 'blame -L with invalid start' '
test_must_fail git blame -L5 tres 2>&1 | grep "has only 2 lines"
'
test_expect_success 'blame -L with invalid end' '
git blame -L1,5 tres 2>&1 | grep "has only 2 lines"
'
test_done