gcc/testsuite/c-c++-common/analyzer/strtok-cppreference.c

   1 /* Example of strtok adapted from:
   2      https://en.cppreference.com/w/c/string/byte/strtok
   3    which is
   4     "licensed under Creative Commons Attribution-Sharealike 3.0
   5      Unported License (CC-BY-SA) and by the GNU Free Documentation License
   6      (GFDL) (unversioned, with no invariant sections, front-cover texts, or
   7      back-cover texts). That means that you can use this site in almost any way
   8      you like, including mirroring, copying, translating, etc. All we would ask
   9      is to provide link back to cppreference.com so that people know where to
  10      get the most up-to-date content. In addition to that, any modified content
  11      should be released under an equivalent license so that everyone could
  12      benefit from the modified versions. "  */
  13
  14 /* { dg-additional-options " -Wno-analyzer-too-complex -Wno-analyzer-symbol-too-complex" } */
  15
  16 #define __STDC_WANT_LIB_EXT1__ 0
  17 #include <string.h>
  18 #include <stdio.h>
  19
  20 int main(void)
  21 {
  22     char input[] = "A bird came down the walk";
  23     printf("Parsing the input string '%s'\n", input);
  24     char *token = strtok(input, " ");
  25     while(token) {
  26         puts(token);
  27         token = strtok(NULL, " ");
  28     }
  29
  30     printf("Contents of the input string now: '");
  31     for(size_t n = 0; n < sizeof input; ++n)
  32         input[n] ? putchar(input[n]) : fputs("\\0", stdout);
  33     puts("'");
  34
  35 #ifdef __STDC_LIB_EXT1__
  36     char str[] = "A bird came down the walk";
  37     rsize_t strmax = sizeof str;
  38     const char *delim = " ";
  39     char *next_token;
  40     printf("Parsing the input string '%s'\n", str);
  41     token = strtok_s(str, &strmax, delim, &next_token);
  42     while(token) {
  43         puts(token);
  44         token = strtok_s(NULL, &strmax, delim, &next_token);
  45     }
  46
  47     printf("Contents of the input string now: '");
  48     for(size_t n = 0; n < sizeof str; ++n)
  49         str[n] ? putchar(str[n]) : fputs("\\0", stdout);
  50     puts("'");
  51 #endif
  52 }