[PATCH] Make all gcc.dg/guality/const-volatile.c subtests PASS under LTO.

[Mark Wielaard <mjw at redhat dot com>]

Some subtests were reported as UNSUPPORTED when running under LTO.
That was just because the relevant variables were optimized out.
Mark those variables as used. Now const-volatile reports 192 PASS.

gcc/testsuite/ChangeLog

	* gcc.dg/guality/const-volatile.c (i): Mark as used.
	(ci): Likewise.
	(pci): Likewise.
	(pvi): Likewise.
	(pcvi): Likewise.
	(cip): Likewise.
	(foo): Likewise.
	(cfoo): Likewise.
---
 gcc/testsuite/gcc.dg/guality/const-volatile.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/guality/const-volatile.c b/gcc/testsuite/gcc.dg/guality/const-volatile.c
index eb45ae5..d657f48 100644
--- a/gcc/testsuite/gcc.dg/guality/const-volatile.c
+++ b/gcc/testsuite/gcc.dg/guality/const-volatile.c
@@ -2,17 +2,17 @@
 /* { dg-do run } */
 /* { dg-options "-g" } */
 
-int i;
-const int ci;
+int i __attribute__((used));
+const int ci __attribute__((used));
 volatile int vi;
 const volatile int cvi;
 
 int *pi __attribute__((used));
-const int *pci;
-volatile int *pvi;
-const volatile int *pcvi;
+const int *pci __attribute__((used));
+volatile int *pvi __attribute__((used));
+const volatile int *pcvi __attribute__((used));
 
-int * const cip;
+int * const cip __attribute__((used));
 int * volatile vip;
 int * const volatile cvip;
 
@@ -38,8 +38,8 @@ struct bar
 };
 
 struct bar bar __attribute__((used));
-struct foo foo;
-const struct foo cfoo;
+struct foo foo __attribute__((used));
+const struct foo cfoo __attribute__((used));
 volatile struct foo vfoo;
 const volatile struct foo cvfoo;
 
-- 
1.9.3