* conf_post.h (ATTRIBUTE_ALLOC_SIZE): Port to clang 3.5.0.

Apparently clang removed support for the alloc_size attribute.

2 files changed, 6 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 817483be1fb..7a98555cc9c 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,8 @@
 2015-01-08  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * conf_post.h (ATTRIBUTE_ALLOC_SIZE): Port to clang 3.5.0.
+        Apparently clang removed support for the alloc_size attribute.
+
         Port Qnil==0 XUNTAG to clang
         clang has undefined behavior if the program subtracts an integer
         from (char *) 0.  Problem reported by YAMAMOTO Mitsuharu in:
diff --git a/src/conf_post.h b/src/conf_post.h
index 479d0448775..1a080fad635 100644
--- a/src/conf_post.h
+++ b/src/conf_post.h
@@ -245,7 +245,9 @@ extern void _DebPrint (const char *fmt, ...);
 # define ATTRIBUTE_MALLOC
 #endif
 
-#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+#if (__clang__                                  \
+     ? __has_attribute (alloc_size)             \
+     : 4 < __GNUC__ + (3 <= __GNUC_MINOR__))
 # define ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
 #else
 # define ATTRIBUTE_ALLOC_SIZE(args)