| // RUN: %clangxx %s -o %t |
| // RUN: %env_tool_opts=detect_write_exec=1 %run %t 2>&1 | FileCheck %s |
| // RUN: %env_tool_opts=detect_write_exec=0 %run %t 2>&1 | FileCheck %s \ |
| // RUN: --check-prefix=CHECK-DISABLED |
| // ubsan and lsan do not install mmap interceptors UNSUPPORTED: ubsan, lsan |
| |
| // TODO: Fix option on Android, it hangs there for unknown reasons. |
| // XFAIL: android |
| |
| #include <stdio.h> |
| #include <sys/mman.h> |
| |
| int main(int argc, char **argv) { |
| char *p = (char *)mmap(0, 1024, PROT_READ | PROT_WRITE | PROT_EXEC, |
| MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); |
| // CHECK: WARNING: {{.*}}Sanitizer: writable-executable page usage |
| // CHECK: #{{[0-9]+.*}}main{{.*}}mmap_write_exec.cpp:[[@LINE-3]] |
| // CHECK: SUMMARY: {{.*}}Sanitizer: w-and-x-usage |
| |
| char *q = (char *)mmap(p, 64, PROT_READ | PROT_WRITE, |
| MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); |
| (void)mprotect(q, 64, PROT_WRITE | PROT_EXEC); |
| // CHECK: WARNING: {{.*}}Sanitizer: writable-executable page usage |
| // CHECK: #{{[0-9]+.*}}main{{.*}}mmap_write_exec.cpp:[[@LINE-2]] |
| // CHECK: SUMMARY: {{.*}}Sanitizer: w-and-x-usage |
| |
| char *a = (char *)mmap(0, 1024, PROT_READ | PROT_WRITE, |
| MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); |
| char *b = (char *)mmap(a, 64, PROT_READ | PROT_WRITE, |
| MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); |
| (void)mprotect(q, 64, PROT_READ | PROT_EXEC); |
| // CHECK-NOT: Sanitizer |
| |
| printf("done\n"); |
| // CHECK-DISABLED-NOT: Sanitizer |
| // CHECK-DISABLED: done |
| } |
