vendor/compiler-rt/compiler-rt-trunk-r321017

1 files changed, 41 insertions, 0 deletions

diff --git a/test/asan/TestCases/Linux/pvalloc-overflow.cc b/test/asan/TestCases/Linux/pvalloc-overflow.cc
new file mode 100644
index 0000000000000..b47c6266b93be
--- /dev/null
+++ b/test/asan/TestCases/Linux/pvalloc-overflow.cc
@@ -0,0 +1,41 @@
+// RUN: %clangxx_asan  %s -o %t
+// RUN: ASAN_OPTIONS=allocator_may_return_null=0 not %run %t m1 2>&1 | FileCheck %s
+// RUN: ASAN_OPTIONS=allocator_may_return_null=1     %run %t m1 2>&1
+// RUN: ASAN_OPTIONS=allocator_may_return_null=0 not %run %t psm1 2>&1 | FileCheck %s
+// RUN: ASAN_OPTIONS=allocator_may_return_null=1     %run %t psm1 2>&1
+
+// UNSUPPORTED: freebsd, android
+
+// Checks that pvalloc overflows are caught. If the allocator is allowed to
+// return null, the errno should be set to ENOMEM.
+
+#include <assert.h>
+#include <errno.h>
+#include <malloc.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(int argc, char *argv[]) {
+  void *p;
+  size_t page_size;
+
+  assert(argc == 2);
+
+  page_size = sysconf(_SC_PAGESIZE);
+
+  if (!strcmp(argv[1], "m1")) {
+    p = pvalloc((uintptr_t)-1);
+    assert(!p);
+    assert(errno == ENOMEM);
+  }
+  if (!strcmp(argv[1], "psm1")) {
+    p = pvalloc((uintptr_t)-(page_size - 1));
+    assert(!p);
+    assert(errno == ENOMEM);
+  }
+
+  return 0;
+}
+
+// CHECK: AddressSanitizer's allocator is terminating the process