Fix build failure on tilepro due to unsupported atomics

* malloc/malloc.c (malloc_state): Use int for have_fastchunks since
        not all targets support atomics on bool.

ChangeLog

@@ -1,3 +1,8 @@
+2017-10-18  Wilco Dijkstra  <wdijkstr@arm.com>
+
+	* malloc/malloc.c (malloc_state): Use int for have_fastchunks since
+	not all targets support atomics on bool.
+
 2017-10-17  Joseph Myers  <joseph@codesourcery.com>
 
 	* include/float.h [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 &&

malloc/malloc.c

@@ -1673,7 +1673,8 @@ struct malloc_state
   int flags;
 
   /* Set if the fastbin chunks contain recently inserted free blocks.  */
-  bool have_fastchunks;
+  /* Note this is a bool but not all targets support atomics on booleans.  */
+  int have_fastchunks;
 
   /* Fastbins */
   mfastbinptr fastbinsY[NFASTBINS];