From: Andreas Schwab <schwab@redhat.com>
To: libc-hacker@sourceware.org
Subject: [PATCH] Fix array overflow in floating point parser
Date: Tue, 31 Aug 2010 13:39:00 -0000 [thread overview]
Message-ID: <m3y6bmkijq.fsf@hase.home> (raw)
2010-08-31 Andreas Schwab <schwab@redhat.com>
[BZ #7066]
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Fix array overflow when
shifting retval into place.
---
stdlib/strtod_l.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/stdlib/strtod_l.c b/stdlib/strtod_l.c
index cde1280..537d1fb 100644
--- a/stdlib/strtod_l.c
+++ b/stdlib/strtod_l.c
@@ -1491,7 +1491,9 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
register int i;
(void) __mpn_lshift (&retval[used
/ BITS_PER_MP_LIMB],
- retval, RETURN_LIMB_SIZE,
+ retval,
+ (RETURN_LIMB_SIZE
+ - used / BITS_PER_MP_LIMB),
used % BITS_PER_MP_LIMB);
for (i = used / BITS_PER_MP_LIMB - 1; i >= 0; --i)
retval[i] = 0;
--
1.7.2.2
--
Andreas Schwab, schwab@redhat.com
GPG Key fingerprint = D4E8 DBE3 3813 BB5D FA84 5EC7 45C6 250E 6F00 984E
"And now for something completely different."
reply other threads:[~2010-08-31 13:39 UTC|newest]
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