[BOLT] Basic exception unwinding test

Author: bgergely0

bolt/test/runtime/AArch64/negate-ra-state.cpp

@@ -0,0 +1,26 @@
+// REQUIRES: system-linux,bolt-runtime
+
+// RUN: %clangxx --target=aarch64-unknown-linux-gnu \
+// RUN: -mbranch-protection=pac-ret -Wl,-q %s -o %t.exe
+// RUN: llvm-bolt %t.exe -o %t.bolt.exe --allow-experimental-pacret
+// RUN: %t.bolt.exe | FileCheck %s
+
+// CHECK: Exception caught: Exception from bar().
+
+#include <cstdio>
+#include <stdexcept>
+
+void bar() { throw std::runtime_error("Exception from bar()."); }
+
+void foo() {
+  try {
+    bar();
+  } catch (const std::exception &e) {
+    printf("Exception caught: %s\n", e.what());
+  }
+}
+
+int main() {
+  foo();
+  return 0;
+}