1 files changed, 48 insertions, 0 deletions
diff --git a/lib/asan/lit_tests/Linux/clone_test.cc b/lib/asan/lit_tests/Linux/clone_test.cc
new file mode 100644
index 000000000000..ca13b22425f2
--- /dev/null
+++ b/lib/asan/lit_tests/Linux/clone_test.cc
@@ -0,0 +1,48 @@
+// Regression test for:
+// http://code.google.com/p/address-sanitizer/issues/detail?id=37
+
+// RUN: %clangxx_asan -m64 -O0 %s -o %t && %t | FileCheck %s
+// RUN: %clangxx_asan -m64 -O1 %s -o %t && %t | FileCheck %s
+// RUN: %clangxx_asan -m64 -O2 %s -o %t && %t | FileCheck %s
+// RUN: %clangxx_asan -m64 -O3 %s -o %t && %t | FileCheck %s
+// RUN: %clangxx_asan -m32 -O0 %s -o %t && %t | FileCheck %s
+// RUN: %clangxx_asan -m32 -O1 %s -o %t && %t | FileCheck %s
+// RUN: %clangxx_asan -m32 -O2 %s -o %t && %t | FileCheck %s
+// RUN: %clangxx_asan -m32 -O3 %s -o %t && %t | FileCheck %s
+
+#include <stdio.h>
+#include <sched.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+int Child(void *arg) {
+  char x[32] = {0};  // Stack gets poisoned.
+  printf("Child:  %p\n", x);
+  _exit(1);  // NoReturn, stack will remain unpoisoned unless we do something.
+}
+
+int main(int argc, char **argv) {
+  const int kStackSize = 1 << 20;
+  char child_stack[kStackSize + 1];
+  char *sp = child_stack + kStackSize;  // Stack grows down.
+  printf("Parent: %p\n", sp);
+  pid_t clone_pid = clone(Child, sp, CLONE_FILES | CLONE_VM, NULL, 0, 0, 0);
+  int status;
+  pid_t wait_result = waitpid(clone_pid, &status, __WCLONE);
+  if (wait_result < 0) {
+    perror("waitpid");
+    return 0;
+  }
+  if (wait_result == clone_pid && WIFEXITED(status)) {
+    // Make sure the child stack was indeed unpoisoned.
+    for (int i = 0; i < kStackSize; i++)
+      child_stack[i] = i;
+    int ret = child_stack[argc - 1];
+    printf("PASSED\n");
+    // CHECK: PASSED
+    return ret;
+  }
+  return 0;
+}