37 lines
976 B
C++
37 lines
976 B
C++
// RUN: %clangxx_msan -std=c++11 -O0 %s -o %t && %run %t
|
|
|
|
#include <assert.h>
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#include <sanitizer/msan_interface.h>
|
|
|
|
int main(void) {
|
|
unsigned char vec[20];
|
|
int res;
|
|
size_t PS = sysconf(_SC_PAGESIZE);
|
|
void *addr = mmap(nullptr, 20 * PS, PROT_READ | PROT_WRITE,
|
|
MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
|
|
|
|
__msan_poison(&vec, sizeof(vec));
|
|
res = mincore(addr, 10 * PS, vec);
|
|
assert(res == 0);
|
|
assert(__msan_test_shadow(vec, sizeof(vec)) == 10);
|
|
|
|
__msan_poison(&vec, sizeof(vec));
|
|
res = mincore(addr, 10 * PS + 42, vec);
|
|
assert(res == 0);
|
|
assert(__msan_test_shadow(vec, sizeof(vec)) == 11);
|
|
|
|
__msan_poison(&vec, sizeof(vec));
|
|
res = mincore(addr, 10 * PS - 1, vec);
|
|
assert(res == 0);
|
|
assert(__msan_test_shadow(vec, sizeof(vec)) == 10);
|
|
|
|
__msan_poison(&vec, sizeof(vec));
|
|
res = mincore(addr, 1, vec);
|
|
assert(res == 0);
|
|
assert(__msan_test_shadow(vec, sizeof(vec)) == 1);
|
|
|
|
return 0;
|
|
}
|