clean string_memset code

[libc-test] / src / functional / string_memset.c

diff --git a/src/functional/string_memset.c b/src/functional/string_memset.c
index 5036d23..5c0dd02 100644 (file)
--- a/src/functional/string_memset.c
+++ b/src/functional/string_memset.c
@@ -3,37 +3,38 @@
 #include <stdint.h>
 #include "test.h"
 
-static char buf[512];
+#define N 400
+static char buf[N];
+static char buf2[N];
 
 static void *(*volatile pmemset)(void *, int, size_t);
 
-static void *aligned(void *p)
+static char *aligned(void *p)
 {
-       return (void*)(((uintptr_t)p + 63) & -64U);
+       return (char*)(((uintptr_t)p + 63) & -64U);
 }
 
-#define N 80
 static void test_align(int align, int len)
 {
-       char *s = aligned(buf);
-       char *want = aligned(buf + 256);
+       char *s = aligned(buf+64) + align;
+       char *want = aligned(buf2+64) + align;
        char *p;
        int i;
 
-       if (align + len > N)
+       if (s - buf + len >= N)
                abort();
        for (i = 0; i < N; i++)
-               s[i] = want[i] = ' ';
+               buf[i] = buf2[i] = ' ';
        for (i = 0; i < len; i++)
-               want[align+i] = '#';
-       p = pmemset(s+align, '#', len);
-       if (p != s+align)
-               t_error("memset(%p,...) returned %p\n", s+align, p);
+               want[i] = '#';
+       p = pmemset(s, '#', len);
+       if (p != s)
+               t_error("memset(%p,...) returned %p\n", s, p);
        for (i = 0; i < N; i++)
-               if (s[i] != want[i]) {
-                       t_error("memset(align %d, '#', %d) failed\n", align, len);
-                       t_printf("got : %.*s\n", align+len+1, s);
-                       t_printf("want: %.*s\n", align+len+1, want);
+               if (buf[i] != buf2[i]) {
+                       t_error("memset(align %d, '#', %d) failed at pos %d\n", align, len, i);
+                       t_printf("got : '%.*s'\n", N, s);
+                       t_printf("want: '%.*s'\n", N, want);
                        break;
                }
 }
@@ -57,7 +58,7 @@ int main(void)
        pmemset = memset;
 
        for (i = 0; i < 16; i++)
-               for (j = 0; j < 64; j++)
+               for (j = 0; j < 200; j++)
                        test_align(i,j);
 
        test_value('c');