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string: add strnlen_s()

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This commit is contained in:
Alex Lyon
2019-04-26 20:32:44 -07:00
parent 67af78d0eb
commit 5bbce37789
4 changed files with 91 additions and 0 deletions
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tests/string/strlen.c
+73
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@@ -0,0 +1,73 @@
#include <string.h>
#include <stdio.h>
#include "test_helpers.h"
int main(void) {
char dest1[13] = "hello world!";
int dest1_len = strlen(dest1);
printf("%d\n", dest1_len);
if(dest1_len != 12) {
puts("strlen(\"hello world!\") failed");
exit(EXIT_FAILURE);
}
char empty[1] = { 0 };
int empty_len = strlen(empty);
printf("%d\n", empty_len);
if(empty_len != 0) {
puts("strlen(\"\") failed");
exit(EXIT_FAILURE);
}
dest1_len = strnlen(dest1, sizeof(dest1));
printf("%d\n", dest1_len);
if(dest1_len != 12) {
puts("strnlen(\"hello world!\", 13) failed");
exit(EXIT_FAILURE);
}
dest1_len = strnlen(dest1, sizeof(dest1) - 1);
printf("%d\n", dest1_len);
if(dest1_len != 12) {
puts("strnlen(\"hello world!\", 12) failed");
exit(EXIT_FAILURE);
}
dest1_len = strnlen(dest1, 0);
printf("%d\n", dest1_len);
if(dest1_len != 0) {
puts("strnlen(\"hello world!\", 0) failed");
exit(EXIT_FAILURE);
}
dest1_len = strnlen(dest1, 300);
printf("%d\n", dest1_len);
if(dest1_len != 12) {
puts("strnlen(\"hello world!\", 300) failed");
exit(EXIT_FAILURE);
}
dest1_len = strnlen_s(dest1, 6);
printf("%d\n", dest1_len);
if(dest1_len != 6) {
puts("strnlen_s(\"hello world!\", 6) failed");
exit(EXIT_FAILURE);
}
dest1_len = strnlen_s(dest1, 20);
printf("%d\n", dest1_len);
if(dest1_len != 12) {
puts("strnlen_s(\"hello world!\", 20) failed");
exit(EXIT_FAILURE);
}
int null_len = strnlen_s(NULL, 100);
printf("%d\n", null_len);
if(null_len != 0) {
puts("strnlen_s(NULL, 100) failed");
exit(EXIT_FAILURE);
}
return 0;
}