re PR c++/80459 (c-c++-common/opaque-vector.c FAILs)

	PR c++/80459
	* c-c++-common/opaque-vector.c (SIZEOF_MAXINT): Define.
	(f): Don't test long double vectors if __SIZEOF_LONG_DOUBLE__
	is not power of 2, or is more than 16 or more than SIZEOF_MAXINT.

From-SVN: r247001

gcc/testsuite/ChangeLog

 2017-04-19  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/80459
+	* c-c++-common/opaque-vector.c (SIZEOF_MAXINT): Define.
+	(f): Don't test long double vectors if __SIZEOF_LONG_DOUBLE__
+	is not power of 2, or is more than 16 or more than SIZEOF_MAXINT.
+
 	PR debug/80436
 	* g++.dg/opt/pr80436.C: New test.
 

gcc/testsuite/c-c++-common/opaque-vector.c

@@ -5,6 +5,11 @@
 #define T_TEST(TYPE)
 #endif
 #define T(TYPE) B_TEST(TYPE) T_TEST(TYPE)
+#ifdef __SIZEOF_INT128__
+#define SIZEOF_MAXINT __SIZEOF_INT128__
+#else
+#define SIZEOF_MAXINT __SIZEOF_LONG_LONG__
+#endif
 
 void f ()
 {
@@ -15,8 +20,13 @@ void f ()
 
   T_TEST(float)
   T_TEST(double)
-  /* Avoid trouble with non-power-of-two sizes.  */
-#if !defined(__i386__) && !defined(__x86_64__) && !defined(__m68k__) && !defined(__ia64__) && !defined(__hppa__)
+  /* Avoid trouble with non-power-of-two sizes.
+     Also avoid trouble with long double larger than integral types.  */
+#if !defined(__i386__) && !defined(__x86_64__) && !defined(__m68k__) \
+    && !defined(__ia64__) && !defined(__hppa__) \
+    && (__SIZEOF_LONG_DOUBLE__ & (__SIZEOF_LONG_DOUBLE__ - 1)) == 0 \
+    && __SIZEOF_LONG_DOUBLE__ <= 16 \
+    && __SIZEOF_LONG_DOUBLE__ <= SIZEOF_MAXINT
   T_TEST(long double)
 #endif
 }