Package: libc6 Version: 2.3.2.ds1-22 Severity: normal pryzbyj@andromeda:/tmp$ cat strdup.c #include <string.h> int main() { char *s=strdup(""); return 0; } pryzbyj@andromeda:/tmp$ gcc -std=c99 strdup.c strdup.c: In function `main': strdup.c:4: warning: implicit declaration of function `strdup' strdup.c:4: warning: initialization makes pointer from integer without a cast