ref: 6728a5ec2351cac7cc27333e0d984c5c2b029b87
dir: /sys/src/cmd/python/Python/strdup.c/
/* strdup() replacement (from stdwin, if you must know) */ #include "pgenheaders.h" char * strdup(const char *str) { if (str != NULL) { register char *copy = malloc(strlen(str) + 1); if (copy != NULL) return strcpy(copy, str); } return NULL; }