Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 abspath.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git i/abspath.c w/abspath.c
index 8194ce1..649f34f 100644
--- i/abspath.c
+++ w/abspath.c
@@ -64,6 +64,8 @@ const char *make_absolute_path(const char *path)
 			len = readlink(buf, next_buf, PATH_MAX);
 			if (len < 0)
 				die ("Invalid symlink: %s", buf);
+			if (PATH_MAX <= len)
+				die("symbolic link too long: %s", buf);
 			next_buf[len] = '\0';
 			buf = next_buf;
 			buf_index = 1 - buf_index;
--
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