From: Alan Modra <amodra@gmail.com>
Date: Tue, 10 Dec 2019 22:27:45 +0000 (+1030)
Subject: ubsan: vax: left shift cannot be represented in type 'int'
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5c05618a0a1f94565001a19da28595ce1dc537f8;p=binutils-gdb.git

ubsan: vax: left shift cannot be represented in type 'int'

	* vax-dis.c (NEXTLONG): Avoid signed overflow.
---

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 2ad26cb5d6f..c1fce7f33cc 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,7 @@
+2019-12-11  Alan Modra  <amodra@gmail.com>
+
+	* vax-dis.c (NEXTLONG): Avoid signed overflow.
+
 2019-12-11  Alan Modra  <amodra@gmail.com>
 
 	* v850-dis.c (get_operand_value): Use unsigned arithmetic.  Don't
diff --git a/opcodes/vax-dis.c b/opcodes/vax-dis.c
index 2c02c29d72d..3bdfa151920 100644
--- a/opcodes/vax-dis.c
+++ b/opcodes/vax-dis.c
@@ -64,7 +64,7 @@ static char *entry_mask_bit[] =
 #define COERCE32(x) ((int) (((x) ^ 0x80000000) - 0x80000000))
 #define NEXTLONG(p)  \
   (p += 4, FETCH_DATA (info, p), \
-   (COERCE32 ((((((p[-1] << 8) + p[-2]) << 8) + p[-3]) << 8) + p[-4])))
+   (COERCE32 (((((((unsigned) p[-1] << 8) + p[-2]) << 8) + p[-3]) << 8) + p[-4])))
 
 /* Maximum length of an instruction.  */
 #define MAXLEN 25