ref: 1e3dd27b9b1dcd2c8f16a0f51effaade0e12c227
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; }