From: Alan Modra <amodra@sourceware.org>
To: bfd-cvs@sourceware.org
Subject: [binutils-gdb] ubsan: arm-dis.c index out of bounds
Date: Wed, 14 Sep 2022 00:50:26 +0000 (GMT) [thread overview]
Message-ID: <20220914005026.463EE395562E@sourceware.org> (raw)
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f15ba945a49b75c23f8133f3be170a681bb050de
commit f15ba945a49b75c23f8133f3be170a681bb050de
Author: Alan Modra <amodra@gmail.com>
Date: Mon Sep 12 18:09:24 2022 +0930
ubsan: arm-dis.c index out of bounds
We are way off in the weeds with this one, and will be printing
<UNPREDICTABLE> for S > 10.
* arm-dis.c (print_insn_cde): Wrap 'T' value.
Diff:
---
opcodes/arm-dis.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
index c1bf276b423..684c74f7f20 100644
--- a/opcodes/arm-dis.c
+++ b/opcodes/arm-dis.c
@@ -8957,7 +8957,7 @@ print_insn_cde (struct disassemble_info *info, long given, bool thumb)
break;
case 'T':
- func (stream, "%s", arm_regnames[value + 1]);
+ func (stream, "%s", arm_regnames[(value + 1) & 15]);
break;
case 'd':
reply other threads:[~2022-09-14 0:50 UTC|newest]
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