ref: 33b631df0ef7ee8d4a9e822bdfec5faa8777bfe7
dir: /lib/c/src/strcat.c/
#include <string.h> #undef strcat char * strcat(char * restrict dst, const char * restrict src) { char *ret = dst; while (*dst) ++dst; while (*dst++ = *src++) /* nothing */; return ret; }