[glibc/zack/no-nested-includes] riscv: Do not use __has_include__

[glibc/zack/no-nested-includes] riscv: Do not use __has_include__

[Zack Weinberg]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=28dd3939221ab26c6774097e9596e30d9753f758

commit 28dd3939221ab26c6774097e9596e30d9753f758
Author: Florian Weimer <fweimer@redhat.com>
Date:   Thu Jun 6 11:24:32 2019 +0200

    riscv: Do not use __has_include__
    
    The user-visible preprocessor construct is called __has_include.

Diff:
---
 ChangeLog                                    | 5 +++++
 sysdeps/unix/sysv/linux/riscv/flush-icache.c | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 82ae580..89176cb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2019-06-06  Florian Weimer  <fweimer@redhat.com>
+
+	* sysdeps/unix/sysv/linux/riscv/flush-icache.c: Do not use
+	internal GCC preprocessor identifier __has_include__.
+
 2019-06-05  Paul A. Clarke  <pc@us.ibm.com>
 
 	* sysdeps/powerpc/fpu/fegetexcept.c (__fegetexcept): Replace code
diff --git a/sysdeps/unix/sysv/linux/riscv/flush-icache.c b/sysdeps/unix/sysv/linux/riscv/flush-icache.c
index cd5c400..f2dfcc5 100644
--- a/sysdeps/unix/sysv/linux/riscv/flush-icache.c
+++ b/sysdeps/unix/sysv/linux/riscv/flush-icache.c
@@ -21,7 +21,7 @@
 #include <stdlib.h>
 #include <atomic.h>
 #include <sys/cachectl.h>
-#if __has_include__ (<asm/syscalls.h>)
+#if __has_include (<asm/syscalls.h>)
 # include <asm/syscalls.h>
 #else
 # include <asm/unistd.h>