[binutils-gdb] Improve boostrap-ubsan config (PR bootstrap/64914).

[Richard Earnshaw]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5b372a4d35bd5874c1a6db2b89f42c7ed3097c63

commit 5b372a4d35bd5874c1a6db2b89f42c7ed3097c63
Author: marxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Thu May 10 10:15:42 2018 +0000

    Improve boostrap-ubsan config (PR bootstrap/64914).
    
    2018-05-10  Martin Liska  <mliska@suse.cz>
    
    	PR bootstrap/64914
    	* md5.c: Use strict alignment with UBSAN_BOOTSTRAP.
    
    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@260112 138bc75d-0d04-0410-961f-82ee72b054a4

Diff:
---
 libiberty/ChangeLog | 5 +++++
 libiberty/md5.c     | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index a116d37..b249226 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,8 @@
+2018-05-10  Martin Liska  <mliska@suse.cz>
+
+	PR bootstrap/64914
+	* md5.c: Use strict alignment with UBSAN_BOOTSTRAP.
+
 2018-04-30  Daniel van Gerpen  <daniel@vangerpen.de>
 
 	* argv.c (expandargv): Fix memory leak for copied argv.
diff --git a/libiberty/md5.c b/libiberty/md5.c
index f106d22..4dd5186 100644
--- a/libiberty/md5.c
+++ b/libiberty/md5.c
@@ -231,7 +231,7 @@ md5_process_bytes (const void *buffer, size_t len, struct md5_ctx *ctx)
   /* Process available complete blocks.  */
   if (len > 64)
     {
-#if !_STRING_ARCH_unaligned
+#if !_STRING_ARCH_unaligned || defined UBSAN_BOOTSTRAP
 /* To check alignment gcc has an appropriate operator.  Other
    compilers don't.  */
 # if __GNUC__ >= 2