[lldb] [llvm] [lldb] Run the LLDB test suite under MTE on capable Apple HW (PR #185780)

[David Spickett via llvm-commits]

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@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/WithColor.h"
+#include <dlfcn.h>
+#include <spawn.h>
+#include <string.h>
+#include <vector>
+
+using namespace llvm;
+
+int main(int argc, const char *argv[], const char *envp[]) {
+  const char *program = argv[1];
+
+  posix_spawnattr_t attr;
+  int ret = posix_spawnattr_init(&attr);
+  if (ret != 0) {
+    WithColor::error() << "posix_spawnattr_init failed\n";
+    return EXIT_FAILURE;
+  }
+
+  typedef int (*posix_spawnattr_set_use_sec_transition_shims_np_t)(
+      posix_spawnattr_t *attr, uint32_t flags);
+  posix_spawnattr_set_use_sec_transition_shims_np_t
+      posix_spawnattr_set_use_sec_transition_shims_np_fn =
+          (posix_spawnattr_set_use_sec_transition_shims_np_t)dlsym(
+              RTLD_DEFAULT, "posix_spawnattr_set_use_sec_transition_shims_np");
+
+  if (!posix_spawnattr_set_use_sec_transition_shims_np_fn) {
+    WithColor::error()
+        << "posix_spawnattr_set_use_sec_transition_shims_np not available\n";
+    return EXIT_FAILURE;
+  }
+
+  ret = posix_spawnattr_set_use_sec_transition_shims_np_fn(&attr, /*unused=*/0);
+  if (ret != 0) {
+    WithColor::error()
+        << "posix_spawnattr_set_use_sec_transition_shims_np failed\n";
+    return EXIT_FAILURE;
+  }
+
+  std::vector<char *> new_args;
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DavidSpickett wrote:

Could you just pass address of argv[1] to posix spawn? Instead of making a new set of arguments.

https://github.com/llvm/llvm-project/pull/185780