alt Hacker NewsTheir specification is pretty bad, allowing code like:
#include <stdio.h>
#include <stddef.h>
void v(int y[printf("hello world!\n")]){
}
int main(){
v(NULL);
typedef int wut[printf("oh no\n")];
}
$ cc vla.c && ./a.out
hello world!
oh no
True, I would also prefer side effects would not be allowed. But simply don't do this. This is not a reason to avoid the feature in general.