// RUN: not c-index-test -read-diagnostics %S/Inputs/empty.dia 2>&1 | FileCheck %s
// CHECK: Trouble deserializing file (Invalid File): Invalid diagnostics signature
// RUN: not c-index-test -read-diagnostics %S/Inputs/empty.dia 2>&1 | FileCheck %s
// CHECK: Trouble deserializing file (Invalid File): Invalid diagnostics signature