aboutsummaryrefslogtreecommitdiff
path: root/string/stratcliff.c
diff options
context:
space:
mode:
Diffstat (limited to 'string/stratcliff.c')
-rw-r--r--string/stratcliff.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/string/stratcliff.c b/string/stratcliff.c
new file mode 100644
index 0000000000..5f6a467c15
--- /dev/null
+++ b/string/stratcliff.c
@@ -0,0 +1,152 @@
+#define _GNU_SOURCE 1
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+
+#ifndef MAX
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+
+int
+main (int argc, char *argv[])
+{
+ size_t size = sysconf (_SC_PAGESIZE);
+ char *adr;
+ int result = 0;
+
+ adr = (char *) mmap (NULL, size, PROT_READ|PROT_WRITE,
+ MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ if (adr == NULL)
+ {
+ if (errno == ENOSYS)
+ puts ("No test, mmap not available.");
+ else
+ {
+ printf ("mmaping failed: %m");
+ result = 1;
+ }
+ }
+ else
+ {
+ char dest[size];
+ int inner, middle, outer;
+
+ memset (adr, 'T', size);
+
+ /* strlen test */
+ for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
+ {
+ for (inner = MAX (outer, size - 64); inner < size; ++inner)
+ {
+ adr[inner] = '\0';
+
+ if (strlen (&adr[outer]) != inner - outer)
+ {
+ printf ("strlen flunked for outer = %d, inner = %d\n",
+ outer, inner);
+ result = 1;
+ }
+
+ adr[inner] = 'T';
+ }
+ }
+
+ /* strchr test */
+ for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
+ {
+ for (middle = MAX (outer, size - 64); middle < size; ++middle)
+ {
+ for (inner = middle; inner < size; ++inner)
+ {
+ char *cp;
+ adr[middle] = 'V';
+ adr[inner] = '\0';
+
+ cp = strchr (&adr[outer], 'V');
+
+ if ((inner == middle && cp != NULL)
+ || (inner != middle
+ && (cp - &adr[outer]) != middle - outer))
+ {
+ printf ("strchr flunked for outer = %d, middle = %d, "
+ "inner = %d\n", outer, middle, inner);
+ result = 1;
+ }
+
+ adr[inner] = 'T';
+ adr[middle] = 'T';
+ }
+ }
+ }
+
+ /* strrchr test */
+ for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
+ {
+ for (middle = MAX (outer, size - 64); middle < size; ++middle)
+ {
+ for (inner = middle; inner < size; ++inner)
+ {
+ char *cp;
+ adr[middle] = 'V';
+ adr[inner] = '\0';
+
+ cp = strrchr (&adr[outer], 'V');
+
+ if ((inner == middle && cp != NULL)
+ || (inner != middle
+ && (cp - &adr[outer]) != middle - outer))
+ {
+ printf ("strrchr flunked for outer = %d, middle = %d, "
+ "inner = %d\n", outer, middle, inner);
+ result = 1;
+ }
+
+ adr[inner] = 'T';
+ adr[middle] = 'T';
+ }
+ }
+ }
+
+ /* strcpy test */
+ for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
+ {
+ for (inner = MAX (outer, size - 64); inner < size; ++inner)
+ {
+ adr[inner] = '\0';
+
+ if (strcpy (dest, &adr[outer]) != dest
+ || strlen (dest) != inner - outer)
+ {
+ printf ("strcpy flunked for outer = %d, inner = %d\n",
+ outer, inner);
+ result = 1;
+ }
+
+ adr[inner] = 'T';
+ }
+ }
+
+ /* stpcpy test */
+ for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
+ {
+ for (inner = MAX (outer, size - 64); inner < size; ++inner)
+ {
+ adr[inner] = '\0';
+
+ if ((stpcpy (dest, &adr[outer]) - dest) != inner - outer)
+ {
+ printf ("stpcpy flunked for outer = %d, inner = %d\n",
+ outer, inner);
+ result = 1;
+ }
+
+ adr[inner] = 'T';
+ }
+ }
+ }
+
+ return result;
+}