From c774e1245ba8f64af2e5e5e5337baa6af25251a6 Mon Sep 17 00:00:00 2001
From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 10 May 2018 07:38:24 +0000
Subject: [PATCH] 	PR tree-optimization/85699 	* gcc.dg/nextafter-1.c
 (NO_LONG_DOUBLE): Define if not defined.  Use 	!NO_LONG_DOUBLE instead of
 __LDBL_MANT_DIG__ != 106. 	* gcc.dg/nextafter-2.c: Include stdlib.h.  For
 glibc < 2.24 define 	NO_LONG_DOUBLE to 1 before including nextafter-1.c.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@260107 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/testsuite/ChangeLog            | 8 ++++++++
 gcc/testsuite/gcc.dg/nextafter-1.c | 7 +++++--
 gcc/testsuite/gcc.dg/nextafter-2.c | 9 +++++++++
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5bbcd708d65..b09ce3ede2d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2018-05-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/85699
+	* gcc.dg/nextafter-1.c (NO_LONG_DOUBLE): Define if not defined.  Use
+	!NO_LONG_DOUBLE instead of __LDBL_MANT_DIG__ != 106.
+	* gcc.dg/nextafter-2.c: Include stdlib.h.  For glibc < 2.24 define
+	NO_LONG_DOUBLE to 1 before including nextafter-1.c.
+
 2018-05-10  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* g++.dg/tls/pr85400.C: New test.
diff --git a/gcc/testsuite/gcc.dg/nextafter-1.c b/gcc/testsuite/gcc.dg/nextafter-1.c
index c8647ede00b..a768574b342 100644
--- a/gcc/testsuite/gcc.dg/nextafter-1.c
+++ b/gcc/testsuite/gcc.dg/nextafter-1.c
@@ -20,6 +20,9 @@ long double nexttowardl (long double, long double);
 #ifndef NEED_EXC
 #define NEED_EXC 0
 #endif
+#ifndef NO_LONG_DOUBLE
+#define NO_LONG_DOUBLE (__LDBL_MANT_DIG__ == 106)
+#endif
 
 #define TEST(name, fn, type, L1, L2, l1, l2, MIN1,			     \
 	     MAX1, DENORM_MIN1, EPSILON1, MIN2, MAX2, DENORM_MIN2)	     \
@@ -129,7 +132,7 @@ TEST (test1, nextafterf, float, F, F, f, f, __FLT_MIN__, __FLT_MAX__,
 TEST (test2, nextafter, double, , , , , __DBL_MIN__, __DBL_MAX__,
       __DBL_DENORM_MIN__, __DBL_EPSILON__, __DBL_MIN__, __DBL_MAX__,
       __DBL_DENORM_MIN__)
-#if __LDBL_MANT_DIG__ != 106
+#if !NO_LONG_DOUBLE
 TEST (test3, nextafterl, long double, L, L, l, l, __LDBL_MIN__, __LDBL_MAX__,
       __LDBL_DENORM_MIN__, __LDBL_EPSILON__, __LDBL_MIN__, __LDBL_MAX__,
       __LDBL_DENORM_MIN__)
@@ -149,7 +152,7 @@ main ()
 {
   test1 ();
   test2 ();
-#if __LDBL_MANT_DIG__ != 106
+#if !NO_LONG_DOUBLE
   test3 ();
   test4 ();
   test5 ();
diff --git a/gcc/testsuite/gcc.dg/nextafter-2.c b/gcc/testsuite/gcc.dg/nextafter-2.c
index ef34676fd7e..0bde721b338 100644
--- a/gcc/testsuite/gcc.dg/nextafter-2.c
+++ b/gcc/testsuite/gcc.dg/nextafter-2.c
@@ -5,4 +5,13 @@
 /* { dg-add-options ieee } */
 /* { dg-add-options c99_runtime } */
 
+#include <stdlib.h>
+
+#if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
+# if !__GLIBC_PREREQ (2, 24)
+/* Workaround buggy nextafterl in glibc 2.23 and earlier,
+   see https://sourceware.org/bugzilla/show_bug.cgi?id=20205  */
+#  define NO_LONG_DOUBLE 1
+# endif
+#endif
 #include "nextafter-1.c"
-- 
2.11.4.GIT