string/stratcliff.c: Replace int with size_t [BZ #21982]

Fix GCC 7 errors when string/stratcliff.c is compiled with -O3:

stratcliff.c: In function ‘do_test’:
cc1: error: assuming signed overflow does not occur when assuming that (X - c) <= X is always true [-Werror=strict-overflow]

	[BZ #21982]
	* string/stratcliff.c (do_test): Declare size, nchars, inner,
	middle and outer with size_t instead of int.  Repleace %d and
	%Zd with %zu in printf.  Update "MAX (0, nchars - 128)" and
	"MAX (outer, nchars - 64)" to support unsigned outer and
	nchars.  Also exit loop when outer == 0.

1 files changed, 9 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 59715f3161..e9d5383b1c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2017-08-23  H.J. Lu  <hongjiu.lu@intel.com>
+
+	[BZ #21982]
+	* string/stratcliff.c (do_test): Declare size, nchars, inner,
+	middle and outer with size_t instead of int.  Repleace %d and
+	%Zd with %zu in printf.  Update "MAX (0, nchars - 128)" and
+	"MAX (outer, nchars - 64)" to support unsigned outer and
+	nchars.  Also exit loop when outer == 0.
+
 2017-08-23  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	* include/fcntl.h (__fcntl_nocancel): Remove definition.