Merge pull request swiftlang#9853 from swiftlang/rdar137522456

[Swift REPL] Inherit the environment for the Swift REPL

Author: JDevlieghere

lldb/source/Plugins/ExpressionParser/Swift/SwiftREPL.cpp

@@ -188,23 +188,18 @@ lldb::REPLSP SwiftREPL::CreateInstanceFromDebugger(Status &err,
                                     // breakpoint above, it better
                                     // say it is internal
 
-  lldb_private::ProcessLaunchInfo launch_info;
-  llvm::StringRef target_settings_argv0 = target_sp->GetArg0();
-
-  if (target_sp->GetDisableASLR())
-    launch_info.GetFlags().Set(eLaunchFlagDisableASLR);
-
-  if (target_sp->GetDisableSTDIO())
-    launch_info.GetFlags().Set(eLaunchFlagDisableSTDIO);
+  lldb_private::ProcessLaunchInfo launch_info =
+      target_sp->GetProcessLaunchInfo();
 
+  // FIXME: Why is this necessary? Document or change once we know the answer.
+  llvm::StringRef target_settings_argv0 = target_sp->GetArg0();
   if (!target_settings_argv0.empty()) {
     launch_info.GetArguments().AppendArgument(target_settings_argv0);
     launch_info.SetExecutableFile(exe_module_sp->GetPlatformFileSpec(), false);
   } else {
     launch_info.SetExecutableFile(exe_module_sp->GetPlatformFileSpec(), true);
   }
 
-  launch_info.GetEnvironment() = target_sp->GetTargetEnvironment();
   debugger.SetAsyncExecution(false);
   err = target_sp->Launch(launch_info, nullptr);
   debugger.SetAsyncExecution(true);

lldb/test/Shell/SwiftREPL/EnvVars.test

@@ -0,0 +1,10 @@
+// Test inheriting environment variables in the REPL.
+// REQUIRES: system-darwin
+// REQUIRES: swift
+
+// RUN: FOO=foo %lldb --repl -O 'settings set target.inherit-env true' < %s 2>&1 \
+// RUN: | FileCheck %s
+
+import Foundation
+ProcessInfo.processInfo.environment["FOO"]
+// CHECK: $R0: String? = "foo"