Debugger: Delay evaluation of stub runnable environment

There can be modifications in the environment between the decision
to use a terminal and its start. We want them taken into account.

Change-Id: I5622614c5fac3bdd8167c29e7b618b5e42a28287
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/debugger/debuggerruncontrol.cpp

@@ -394,7 +394,8 @@ void DebuggerRunTool::setUseTerminal(bool on)
             && debuggerSettings()->useCdbConsole.value();
 
     if (on && !d->terminalRunner && !useCdbConsole) {
-        d->terminalRunner = new TerminalRunner(runControl(), m_runParameters.inferior);
+        d->terminalRunner =
+            new TerminalRunner(runControl(), [this] { return m_runParameters.inferior; });
         d->terminalRunner->setRunAsRoot(m_runParameters.runAsRoot);
         addStartDependency(d->terminalRunner);
     }

src/plugins/debugger/terminal.cpp

@@ -168,13 +168,12 @@ void Terminal::onSlaveReaderActivated(int fd)
 #endif
 }
 
-TerminalRunner::TerminalRunner(RunControl *runControl, const Runnable &stubRunnable)
-    : RunWorker(runControl)
+TerminalRunner::TerminalRunner(RunControl *runControl,
+                               const std::function<Runnable()> &stubRunnable)
+    : RunWorker(runControl), m_stubRunnable(stubRunnable)
 {
     setId("TerminalRunner");
 
-    m_stubRunnable = stubRunnable;
-
     connect(&m_stubProc, &ConsoleProcess::processError,
             this, &TerminalRunner::stubError);
     connect(&m_stubProc, &ConsoleProcess::processStarted,
@@ -200,13 +199,16 @@ void TerminalRunner::setRunAsRoot(bool on)
 
 void TerminalRunner::start()
 {
+    QTC_ASSERT(m_stubRunnable, reportFailure({}); return);
+    Runnable stub = m_stubRunnable();
+
     if (m_runAsRoot) {
         m_stubProc.setRunAsRoot(true);
-        RunControl::provideAskPassEntry(m_stubRunnable.environment);
+        RunControl::provideAskPassEntry(stub.environment);
     }
 
-    m_stubProc.setEnvironment(m_stubRunnable.environment);
-    m_stubProc.setWorkingDirectory(m_stubRunnable.workingDirectory);
+    m_stubProc.setEnvironment(stub.environment);
+    m_stubProc.setWorkingDirectory(stub.workingDirectory);
 
     if (HostOsInfo::isWindowsHost()) {
         m_stubProc.setMode(ConsoleProcess::Suspend);
@@ -216,7 +218,7 @@ void TerminalRunner::start()
     }
 
     // Error message for user is delivered via a signal.
-    m_stubProc.setCommand(m_stubRunnable.commandLine());
+    m_stubProc.setCommand(stub.commandLine());
     m_stubProc.start();
 }
 

src/plugins/debugger/terminal.h

@@ -72,7 +72,7 @@ class TerminalRunner : public ProjectExplorer::RunWorker
 {
 public:
     TerminalRunner(ProjectExplorer::RunControl *runControl,
-                   const ProjectExplorer::Runnable &stubRunnable);
+                   const std::function<ProjectExplorer::Runnable()> &stubRunnable);
 
     qint64 applicationPid() const { return m_applicationPid; }
     qint64 applicationMainThreadId() const { return m_applicationMainThreadId; }
@@ -89,7 +89,7 @@ private:
     void stubError(const QString &msg);
 
     Utils::ConsoleProcess m_stubProc;
-    ProjectExplorer::Runnable m_stubRunnable;
+    std::function<ProjectExplorer::Runnable()> m_stubRunnable;
     qint64 m_applicationPid = 0;
     qint64 m_applicationMainThreadId = 0;
     bool m_runAsRoot = false;