Wrestrict.c (test_strcpy_range): Bump string size of one test and add dg-warning…

Wrestrict.c (test_strcpy_range): Bump string size of one test and add dg-warning for the -Wstringop-overflow warning.

	* c-c++-common/Wrestrict.c (test_strcpy_range): Bump string size of one
	test and add dg-warning for the -Wstringop-overflow warning.

From-SVN: r256764

gcc/testsuite/ChangeLog

 2018-01-16  Eric Botcazou  <ebotcazou@adacore.com>
 
+	* c-c++-common/Wrestrict.c (test_strcpy_range): Bump string size of one
+	test and add dg-warning for the -Wstringop-overflow warning.
+
+2018-01-16  Eric Botcazou  <ebotcazou@adacore.com>
+
 	* c-c++-common/Warray-bounds-4.c (test_strcpy_bounds_memarray_range):
 	XFAIL last test on SPARC and Visium.
 

gcc/testsuite/c-c++-common/Wrestrict.c

@@ -758,7 +758,8 @@ void test_strcpy_range (void)
   T (8, "012", a + r, a);            /* { dg-warning "accessing 4 bytes at offsets \\\[3, \[0-9\]+] and 0 may overlap 1 byte at offset 3" "strcpy" } */
 
   r = SR (DIFF_MAX - 2, DIFF_MAX - 1);
-  T (8, "012", a + r, a);            /* { dg-warning "accessing 4 bytes at offsets \\\[\[0-9\]+, \[0-9\]+] and 0 overlaps" "strcpy" } */
+  T (8, "0123", a + r, a);            /* { dg-warning "accessing 5 bytes at offsets \\\[\[0-9\]+, \[0-9\]+] and 0 overlaps" "strcpy" } */
+                                      /* { dg-warning "writing 5 bytes into a region of size 0 overflows" "memcpy" { target *-*-* } .-1 } */
 
   /* Exercise the full range of ptrdiff_t.  */
   r = signed_value ();