| // RUN: %clang_esan_wset -O0 %s -o %t 2>&1 |
| // RUN: %run %t 2>&1 | FileCheck %s |
| |
| // FIXME: Re-enable once PR33590 is fixed. |
| // UNSUPPORTED: x86_64 |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <assert.h> |
| |
| const int size = 0x1 << 25; // 523288 cache lines |
| const int line_size = 64; |
| |
| int main(int argc, char **argv) { |
| char *bufA = (char *)malloc(sizeof(char) * line_size); |
| char bufB[64]; |
| char *bufC = (char *)mmap(0, size, PROT_READ | PROT_WRITE, |
| MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| bufA[0] = 0; |
| // This additional access to the same line should not increase the line |
| // count: but it's difficult to make a non-flaky test that measures the |
| // lines down to the ones digit so right now we're not really testing that. |
| // If we add a heap-only mode we may be able to be more precise. |
| bufA[1] = 0; |
| bufB[33] = 1; |
| for (int i = 0; i < size; i += line_size) |
| bufC[i] = 0; |
| free(bufA); |
| munmap(bufC, 0x4000); |
| // CHECK: {{.*}} EfficiencySanitizer: the total working set size: 32 MB (524{{[0-9][0-9][0-9]}} cache lines) |
| return 0; |
| } |
