1 #include <unistd.h> 2 #include "tests/sys_mman.h" 3 #include <stdio.h> 4 #include <stdlib.h> 5 6 /* Point of this is that the fd of an PROT_EXEC segment is -1, so Valgrind 7 shouldn't add it to its list of exe segs, and thus it won't be discarded 8 upon the munmap() (so no "discard" message). */ 9 10 int main() 11 { 12 void* m; 13 14 m = mmap(NULL, 100, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); 15 16 if (m == (void*)-1) { 17 fprintf(stderr, "error mmapping\n"); 18 exit(1); 19 } 20 21 munmap(m, 100); 22 23 return 0; 24 } 25
