snprintf-chk.c (ptr): Declare volatile.

	* snprintf-chk.c (ptr): Declare volatile.
	* strcpy-chk.c (s2, s3, l1): Declare volatile.
	* snprintf-chk.c (ptr): Declare volatile.
	* vsprintf-chk.c (ptr): Declare volatile.
	* vsnprintf-chk.c (ptr): Declare volatile.

From-SVN: r167466

gcc/testsuite/ChangeLog

+2010-12-04  Jan Hubicka  <jh@suse.cz>
+
+	* snprintf-chk.c (ptr): Declare volatile.
+	* strcpy-chk.c (s2, s3, l1): Declare volatile.
+	* snprintf-chk.c (ptr): Declare volatile.
+	* vsprintf-chk.c (ptr): Declare volatile.
+	* vsnprintf-chk.c (ptr): Declare volatile.
+
 2010-12-04  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/46584

gcc/testsuite/gcc.c-torture/execute/builtins/snprintf-chk.c

@@ -21,7 +21,7 @@ char *s3 = "FGH";
 char *s4;
 size_t l1 = 1;
 static char buffer[32];
-char *ptr = "barf";
+char * volatile ptr = "barf"; /* prevent constant propagation to happen when whole program assumptions are made.  */ 
 
 void
 __attribute__((noinline))

gcc/testsuite/gcc.c-torture/execute/builtins/sprintf-chk.c

@@ -20,7 +20,7 @@ char *s3 = "FGH";
 char *s4;
 size_t l1 = 1;
 static char buffer[32];
-char *ptr = "barf";
+char * volatile ptr = "barf"; /* prevent constant propagation to happen when whole program assumptions are made.  */
 
 void
 __attribute__((noinline))

gcc/testsuite/gcc.c-torture/execute/builtins/strncpy-chk.c

@@ -16,10 +16,10 @@ extern void *memset (void *, int, size_t);
 
 const char s1[] = "123";
 char p[32] = "";
-char *s2 = "defg";
-char *s3 = "FGH";
+char * volatile s2 = "defg";  /* prevent constant propagation to happen when whole program assumptions are made.  */
+char * volatile s3 = "FGH";  /* prevent constant propagation to happen when whole program assumptions are made.  */
 char *s4;
-size_t l1 = 1;
+volatile size_t l1 = 1;  /* prevent constant propagation to happen when whole program assumptions are made.  */
 int i;
 
 void

gcc/testsuite/gcc.c-torture/execute/builtins/vsnprintf-chk.c

@@ -22,7 +22,7 @@ char *s3 = "FGH";
 char *s4;
 size_t l1 = 1;
 static char buffer[32];
-char *ptr = "barf";
+char * volatile ptr = "barf";  /* prevent constant propagation to happen when whole program assumptions are made.  */
 
 int
 __attribute__((noinline))

gcc/testsuite/gcc.c-torture/execute/builtins/vsprintf-chk.c

@@ -22,7 +22,7 @@ char *s3 = "FGH";
 char *s4;
 size_t l1 = 1;
 static char buffer[32];
-char *ptr = "barf";
+char * volatile ptr = "barf";  /* prevent constant propagation to happen when whole program assumptions are made.  */
 
 int
 __attribute__((noinline))