ref: 433b9cd26eb5d27977eb8cde6bb1c019606e0ffa
dir: /tests/libc/execute/0021-strncpy.c/
#include <assert.h> #include <stdio.h> #include <string.h> #define SIZ 6 /* output: testing test1 test2 test3 done end: */ int main() { char *s, buf[SIZ]; puts("testing"); puts("test1"); memset(buf, '0', SIZ); s = strncpy(buf, "abc", sizeof(buf)); assert(s == buf); assert(!memcmp(s, (char[SIZ]) {"abc"}, sizeof(buf))); puts("test2"); memset(buf, '0', SIZ); s = strncpy(buf, "", sizeof(buf)); assert(s == buf); assert(!memcmp(s, (char[SIZ]) {'\0'}, sizeof(buf))); puts("test3"); memset(buf, '0', SIZ); s = strncpy(buf, "", 1); assert(s == buf); assert(!memcmp(s, (char[SIZ]) {'\0', '0', '0', '0', '0', '0'}, sizeof(buf))); puts("done"); return 0; }