Add the clang library to the repo (with some of my changes, too).

1 files changed, 20 insertions, 0 deletions

diff --git a/clang/test/Index/crash-recovery-modules.m b/clang/test/Index/crash-recovery-modules.m
new file mode 100644
index 0000000..212923f
--- /dev/null
+++ b/clang/test/Index/crash-recovery-modules.m
@@ -0,0 +1,20 @@
+// Clear out the module cache entirely, so we start from nothing.
+// RUN: rm -rf %t
+
+// Parse the file, such that building the module will cause Clang to crash.
+// RUN: not env CINDEXTEST_FAILONERROR=1 c-index-test -test-load-source all -fmodules -fmodule-cache-path %t -Xclang -fdisable-module-hash -I %S/Inputs/Headers -DCRASH %s 2> %t.err
+// RUN: FileCheck < %t.err -check-prefix=CHECK-CRASH %s
+// CHECK-CRASH: crash-recovery-modules.m:16:32:{16:2-16:37}: fatal error: could not build module 'Crash'
+
+// Parse the file again, without crashing, to make sure that
+// subsequent parses do the right thing.
+// RUN: env CINDEXTEST_FAILONERROR=1 c-index-test -test-load-source all -fmodules -fmodule-cache-path %t -Xclang -fdisable-module-hash -I %S/Inputs/Headers %s
+
+// REQUIRES: crash-recovery
+// REQUIRES: shell
+
+@__experimental_modules_import Crash;
+
+void test() {
+  const char* error = getCrashString();
+}