#include <assert.h> #include <stdlib.h> #include <sys/poll.h> // At one point, poll()'s checking was not done accurately. This test // exposes this -- previously Memcheck only found one error, now if finds // two. int main(void) { // Under-allocate by one byte so we get an addressability error. struct pollfd* ufds = malloc(2 * sizeof(struct pollfd) - 1); assert(ufds); ufds[0].fd = 0; ufds[0].events = 0; //ufds[1].fd = 0; // leave undefined so we get another error. ufds[1].events = 0; // Previously, the bounds-error due to the under-allocation was detected, // but not the undefined value error due to ufds[1].fd not being defined. poll(ufds, 2, 200); return 0; }