From 9ecebfa28758dfa4e96b841ffe63b31db270a91e Mon Sep 17 00:00:00 2001
From: Alain Magloire <alain@qnx.com>
Date: Fri, 1 Nov 2002 16:44:34 +0000
Subject: [PATCH] Try to catch upfront errors like bad arguments by checking if
 the process is still alive.

---
 .../eclipse/cdt/debug/mi/core/MISession.java  | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/debug/org.eclipse.cdt.debug.mi.core/src/org/eclipse/cdt/debug/mi/core/MISession.java b/debug/org.eclipse.cdt.debug.mi.core/src/org/eclipse/cdt/debug/mi/core/MISession.java
index 28ac1e91e5f..2c1c2a9de27 100644
--- a/debug/org.eclipse.cdt.debug.mi.core/src/org/eclipse/cdt/debug/mi/core/MISession.java
+++ b/debug/org.eclipse.cdt.debug.mi.core/src/org/eclipse/cdt/debug/mi/core/MISession.java
@@ -4,8 +4,10 @@
  */
 package org.eclipse.cdt.debug.mi.core;
 
+import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.PipedInputStream;
 import java.io.PipedOutputStream;
@@ -107,6 +109,27 @@ public class MISession extends Observable {
 		rxQueue = new CommandQueue();
 		eventQueue = new Queue();
 
+		// The Process may have terminated earlier because
+		// of bad arguments etc .. check this here and bail out.
+		try {
+			process.exitValue();
+			InputStream err = process.getErrorStream();
+			BufferedReader reader = new BufferedReader(new InputStreamReader(err));
+			String line = null;
+			try {
+				line = reader.readLine();
+				reader.close();
+			} catch (Exception e) {
+				// the reader may throw a NPE.
+			}
+			if (line == null) {
+				line = "Process Terminated";
+			}
+			throw new MIException(line);
+		} catch (IllegalThreadStateException e) {
+			// Ok, it means the process is alive.
+		}
+
 		txThread = new TxThread(this);
 		rxThread = new RxThread(this);
 		eventThread = new EventThread(this);