builtin-apply.c: fix the --- and +++ header filename consistency check

[Andreas Gruenbacher <agruen@suse.de>]

gitdiff_verify_name() only did a filename prefix check because of an
off-by-one error.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
---
 builtin-apply.c            |    2 +-
 t/t4133-apply-filenames.sh |   38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletions(-)
 create mode 100755 t/t4133-apply-filenames.sh

diff --git a/builtin-apply.c b/builtin-apply.c
index 541493e..c8be66e 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -686,7 +686,7 @@ static char *gitdiff_verify_name(const char *line, int 
isnull, char *orig_name,
 		if (isnull)
 			die("git apply: bad git-diff - expected /dev/null, got %s on line %d", 
name, linenr);
 		another = find_name(line, NULL, p_value, TERM_TAB);
-		if (!another || memcmp(another, name, len))
+		if (!another || memcmp(another, name, len + 1))
 			die("git apply: bad git-diff - inconsistent %s filename on line %d", 
oldnew, linenr);
 		free(another);
 		return orig_name;
diff --git a/t/t4133-apply-filenames.sh b/t/t4133-apply-filenames.sh
new file mode 100755
index 0000000..3421807
--- /dev/null
+++ b/t/t4133-apply-filenames.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+#
+# Copyright (c) 2010 Andreas Gruenbacher
+#
+
+test_description='git apply filename consistency check'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+	cat > bad1.patch <<EOF
+diff --git a/f b/f
+new file mode 100644
+index 0000000..d00491f
+--- /dev/null
++++ b/f-blah
+@@ -0,0 +1 @@
++1
+EOF
+	cat > bad2.patch <<EOF
+diff --git a/f b/f
+deleted file mode 100644
+index d00491f..0000000
+--- b/f-blah
++++ /dev/null
+@@ -1 +0,0 @@
+-1
+EOF
+'
+
+test_expect_success 'apply diff with inconsistent filenames in headers' '
+	test_must_fail git apply bad1.patch 2>err
+	grep "inconsistent new filename" err
+	test_must_fail git apply bad2.patch 2>err
+	grep "inconsistent old filename" err
+'
+
+test_done
-- 
1.6.6.243.gff6d2