memcheck/tests/solaris/strlcpy.c

   1 /* Tests for some interesting cases in non-standard strlcpy(). */
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <strings.h>
   6
   7 int main(void)
   8 {
   9    size_t copied;
  10
  11    char *src = malloc(100);
  12    if (src == NULL) {
  13       fprintf(stderr, "Memory allocation failure.\n");
  14       return 1;
  15    }
  16    strcpy(src, "Hey, dude!");
  17
  18    char *dst = malloc(10);
  19    if (dst == NULL) {
  20       fprintf(stderr, "Memory allocation failure.\n");
  21       return 1;
  22    }
  23
  24    /* This is ok. */
  25    copied = strlcpy(dst, src, 10);
  26    if (copied != 10)
  27       fprintf(stderr, "Expected 10 but got %zu for test #1.\n", copied);
  28
  29    /* Here dst is not large enough. */
  30    copied = strlcpy(dst, src, strlen(src) + 1);
  31    if (copied != 10)
  32       fprintf(stderr, "Expected 10 but got %zu for test #2.\n", copied);
  33
  34    /* This is just a fancy way how to write strlen(src).
  35       Undocumented but heavily used. */
  36    copied = strlcpy(NULL, src, 0);
  37    if (copied != 10)
  38       fprintf(stderr, "Expected 10 but got %zu for test #3.\n", copied);
  39
  40    /* Source and destination overlap. */
  41    strlcpy(src + 9, src, strlen(src) + 1);
  42    /* Return value is not checked because function behaviour
  43       is undefined in such case (and valgrind's differs). */
  44
  45    return 0;
  46 }
  47