Verified Commit 0469c0c2 authored by jD91mZM2's avatar jD91mZM2
Browse files

Add tests for memcmp and fix a teeny tiny bug

parent 3f4fbf90
Pipeline #1460 failed with stages
in 15 minutes and 6 seconds
......@@ -95,7 +95,7 @@ pub unsafe extern "C" fn memcmp(s1: *const c_void, s2: *const c_void, n: usize)
let mut b = b as *const u8;
for _ in 0..rem {
if *a != *b {
return a as c_int - b as c_int;
return *a as c_int - *b as c_int;
}
a = a.offset(1);
b = b.offset(1);
......
# mem #
Correct memchr
Correct memccpy
Correct memcmp
......@@ -3,22 +3,40 @@
#include <string.h>
int main(int argc, char ** argv) {
printf("# mem #\n");
char arr[100];
memset(arr, 0, 100); // Compiler builtin, should work
arr[50] = 1;
if ((size_t)memchr((void *)arr, 1, 100) - (size_t)arr != 50) {
printf("Incorrect memchr\n");
exit(1);
}
printf("Correct memchr\n");
char arr2[51];
memset(arr2, 0, 51); // Compiler builtin, should work
memccpy((void *)arr2, (void *)arr, 1, 100);
if (arr[50] != 1) {
printf("Incorrect memccpy\n");
exit(1);
}
printf("Correct memccpy\n");
puts("# mem #");
char arr[100];
memset(arr, 0, 100); // Compiler builtin, should work
arr[50] = 1;
if ((size_t)memchr((void *)arr, 1, 100) - (size_t)arr != 50) {
puts("Incorrect memchr");
exit(1);
}
puts("Correct memchr");
char arr2[51];
memset(arr2, 0, 51); // Compiler builtin, should work
memccpy((void *)arr2, (void *)arr, 1, 100);
if (arr[50] != 1) {
puts("Incorrect memccpy");
exit(1);
}
puts("Correct memccpy");
int res;
if ((res = memcmp("hello world", "hello world", 11))) {
printf("Incorrect memcmp (1), expected 0 found %d\n", res);
exit(1);
}
if ((res = memcmp("hello world", "hello worlt", 11)) >= 0) {
printf("Incorrect memcmp (2), expected -, found %d\n", res);
exit(1);
}
if ((res = memcmp("hello world", "hallo world", 5)) <= 0) {
printf("Incorrect memcmp (3), expected +, found %d\n", res);
exit(1);
}
if ((res = memcmp("hello world", "henlo world", 5)) >= 0) {
printf("Incorrect memcmp (4), expected -, found %d\n", res);
exit(1);
}
puts("Correct memcmp");
return 0;
}
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment