Merge from gnulib

This incorporates:
2016-11-27 md4,md5,sha*: tune for recent glibc _STRING_INLINE_unaligned
2016-11-21 snippet/c++defs: Simplify _GL_CXXALIAS_* macros.
* build-aux/snippet/c++defs.h:
* lib/md5.c, lib/sha1.c, lib/sha256.c, lib/sha512.c:
Copy from gnulib.

4 files changed, 4 insertions, 4 deletions

diff --git a/lib/md5.c b/lib/md5.c
index 62d247ed7aa..cec62339e26 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -259,7 +259,7 @@ 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 || _STRING_INLINE_unaligned)
 # define UNALIGNED_P(p) ((uintptr_t) (p) % alignof (uint32_t) != 0)
       if (UNALIGNED_P (buffer))
         while (len > 64)
diff --git a/lib/sha1.c b/lib/sha1.c
index 45f1cbefd18..753c0884d8b 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -246,7 +246,7 @@ sha1_process_bytes (const void *buffer, size_t len, struct sha1_ctx *ctx)
   /* Process available complete blocks.  */
   if (len >= 64)
     {
-#if !_STRING_ARCH_unaligned
+#if !(_STRING_ARCH_unaligned || _STRING_INLINE_unaligned)
 # define UNALIGNED_P(p) ((uintptr_t) (p) % alignof (uint32_t) != 0)
       if (UNALIGNED_P (buffer))
         while (len > 64)
diff --git a/lib/sha256.c b/lib/sha256.c
index 0be8fd2a858..5251e8d950b 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -379,7 +379,7 @@ sha256_process_bytes (const void *buffer, size_t len, struct sha256_ctx *ctx)
   /* Process available complete blocks.  */
   if (len >= 64)
     {
-#if !_STRING_ARCH_unaligned
+#if !(_STRING_ARCH_unaligned || _STRING_INLINE_unaligned)
 # define UNALIGNED_P(p) ((uintptr_t) (p) % alignof (uint32_t) != 0)
       if (UNALIGNED_P (buffer))
         while (len > 64)
diff --git a/lib/sha512.c b/lib/sha512.c
index 5494dcbdbad..71a7eca14d7 100644
--- a/lib/sha512.c
+++ b/lib/sha512.c
@@ -387,7 +387,7 @@ sha512_process_bytes (const void *buffer, size_t len, struct sha512_ctx *ctx)
   /* Process available complete blocks.  */
   if (len >= 128)
     {
-#if !_STRING_ARCH_unaligned
+#if !(_STRING_ARCH_unaligned || _STRING_INLINE_unaligned)
 # define UNALIGNED_P(p) ((uintptr_t) (p) % alignof (u64) != 0)
       if (UNALIGNED_P (buffer))
         while (len > 128)