From: Alan Modra <amodra@gmail.com>
Date: Fri, 3 Jun 2022 13:10:21 +0000 (+0930)
Subject: Re: ubsan: undefined shift in frag_align_code
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7e6ba6a2a56e6195da36329bdeb1654e20aad198;p=binutils-gdb.git

Re: ubsan: undefined shift in frag_align_code

This one needs the same fix too.

	* config/tc-i386.h (MAX_MEM_FOR_RS_ALIGN_CODE): Avoid signed
	integer overflow.
---

diff --git a/gas/config/tc-i386.h b/gas/config/tc-i386.h
index d7c6b33c778..817539ea560 100644
--- a/gas/config/tc-i386.h
+++ b/gas/config/tc-i386.h
@@ -207,7 +207,8 @@ if ((n)									\
     goto around;							\
   }
 
-#define MAX_MEM_FOR_RS_ALIGN_CODE  (alignment ? ((1 << alignment) - 1) : 1)
+#define MAX_MEM_FOR_RS_ALIGN_CODE \
+  (alignment ? ((size_t) 1 << alignment) - 1 : (size_t) 1)
 
 extern void i386_cons_align (int);
 #define md_cons_align(nbytes) i386_cons_align (nbytes)