diff --git a/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOSCLIInfoPID.java b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOSCLIInfoPID.java
new file mode 100644
index 00000000000..d64eccc1a3c
--- /dev/null
+++ b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOSCLIInfoPID.java
@@ -0,0 +1,83 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 ENEA Software AB and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     ENEA Software AB - CLI command extension - fix for bug 190277
+ *     Marc-Andre Laperle - Replace info proc with info pid, patch for bug 294538
+ *******************************************************************************/
+package org.eclipse.cdt.debug.mi.core.command.factories.macos;
+
+import org.eclipse.cdt.debug.mi.core.MIException;
+import org.eclipse.cdt.debug.mi.core.command.CLIInfoProc;
+import org.eclipse.cdt.debug.mi.core.output.CLIInfoProcInfo;
+import org.eclipse.cdt.debug.mi.core.output.MIInfo;
+import org.eclipse.cdt.debug.mi.core.output.MIOutput;
+import org.eclipse.cdt.debug.mi.core.output.MIResult;
+
+/**
+ * GDB/CLI info proc parsing. 18 info pid &"info pid\n"
+ * 18^done,process-id="89643"
+ * 
+ */
+class MacOSCLIInfoPID extends CLIInfoProc {
+
+	// apple-gdb doesn't have info proc but has info pid
+	// Since info proc is only used to get the pid, it is valid to use info pid
+	// as a replacement
+	public MacOSCLIInfoPID() {
+		setOperation("info pid"); //$NON-NLS-1$
+	}
+
+	public MIInfo getMIInfo() throws MIException {
+		MIInfo info = null;
+		MIOutput out = getMIOutput();
+		if (out != null) {
+			info = new MacOSCLIInfoPIDOutput(out);
+			if (info.isError()) {
+				throwMIException(info, out);
+			}
+		}
+		return info;
+	}
+
+	class MacOSCLIInfoPIDOutput extends CLIInfoProcInfo {
+
+		int pid;
+
+		public MacOSCLIInfoPIDOutput(MIOutput out) {
+			super(out);
+			parsePID();
+		}
+
+		void parsePID() {
+			if (isDone()) {
+				MIOutput out = getMIOutput();
+				MIResult[] rr = out.getMIResultRecord().getMIResults();
+				for (int i = 0; i < rr.length; i++) {
+					parsePIDLine(rr[i].toString());
+				}
+			}
+		}
+
+		void parsePIDLine(String str) {
+			if (str != null && str.length() > 0) {
+				str = str.trim();
+				if (!str.startsWith("process-id=")) { //$NON-NLS-1$
+					return;
+				}
+
+				pid = Integer.decode(str.substring(12, str.length() - 1))
+						.intValue();
+			}
+		}
+
+		public int getPID() {
+			return pid;
+		}
+
+	}
+}
diff --git a/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOSCLIInfoThreads.java b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOSCLIInfoThreads.java
new file mode 100644
index 00000000000..14fff6498c6
--- /dev/null
+++ b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOSCLIInfoThreads.java
@@ -0,0 +1,50 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2010 QNX Software Systems and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     QNX Software Systems - Initial API and implementation
+ *     Marc-Andre Laperle - use -thread-list-ids for mac, fix for bug 294538
+ *******************************************************************************/
+package org.eclipse.cdt.debug.mi.core.command.factories.macos;
+
+import org.eclipse.cdt.debug.mi.core.MIException;
+import org.eclipse.cdt.debug.mi.core.command.CLIInfoThreads;
+import org.eclipse.cdt.debug.mi.core.output.CLIInfoThreadsInfo;
+import org.eclipse.cdt.debug.mi.core.output.MIInfo;
+import org.eclipse.cdt.debug.mi.core.output.MIOutput;
+
+class MacOSCLIInfoThreads extends CLIInfoThreads {
+	public MacOSCLIInfoThreads() {
+		super();
+		// with apple-gdb, we use -thread-list-ids as a replacement for info
+		// threads
+		setOperation("-thread-list-ids"); //$NON-NLS-1$
+	}
+
+	// MI doesn't work with a space between the token and the
+	// operation, so we override CLICommmand's toString
+	public String toString() {
+		return getToken() + getOperation() + "\n"; //$NON-NLS-1$
+	}
+
+	public MIInfo getMIInfo() throws MIException {
+		MIInfo info = null;
+		MIOutput out = getMIOutput();
+		if (out != null) {
+			info = new MacOsCLIInfoThreadsInfo(out);
+			if (info.isError()) {
+				throwMIException(info, out);
+			}
+		}
+		return info;
+	}
+
+	public CLIInfoThreadsInfo getMIInfoThreadsInfo() throws MIException {
+		return (CLIInfoThreadsInfo) getMIInfo();
+	}
+
+}
diff --git a/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOsCLIInfoThreadsInfo.java b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOsCLIInfoThreadsInfo.java
new file mode 100644
index 00000000000..27f93bb1423
--- /dev/null
+++ b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/MacOsCLIInfoThreadsInfo.java
@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2010 QNX Software Systems and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     QNX Software Systems - Initial API and implementation
+ *     Marc-Andre Laperle - use -thread-list-ids for mac, fix for bug 294538
+ *******************************************************************************/
+package org.eclipse.cdt.debug.mi.core.command.factories.macos;
+
+import java.util.Arrays;
+
+import org.eclipse.cdt.debug.mi.core.output.CLIInfoThreadsInfo;
+import org.eclipse.cdt.debug.mi.core.output.MIConst;
+import org.eclipse.cdt.debug.mi.core.output.MIOutput;
+import org.eclipse.cdt.debug.mi.core.output.MIResult;
+import org.eclipse.cdt.debug.mi.core.output.MIResultRecord;
+import org.eclipse.cdt.debug.mi.core.output.MITuple;
+import org.eclipse.cdt.debug.mi.core.output.MIValue;
+
+/**
+ * This class actually parses -thread-list-ids and converts it to the
+ * CLIInfoThreadsInfo 'format'
+ */
+class MacOsCLIInfoThreadsInfo extends CLIInfoThreadsInfo {
+
+	public MacOsCLIInfoThreadsInfo(MIOutput out) {
+		super(out);
+	}
+
+	protected void parse() {
+		if (isDone()) {
+			MIOutput out = getMIOutput();
+			MIResultRecord rr = out.getMIResultRecord();
+			if (rr != null) {
+				MIResult[] results = rr.getMIResults();
+				for (int i = 0; i < results.length; i++) {
+					String var = results[i].getVariable();
+					if (var.equals("thread-ids")) { //$NON-NLS-1$
+						MIValue val = results[i].getMIValue();
+						if (val instanceof MITuple) {
+							parseThreadIds((MITuple) val);
+						}
+					}
+				}
+			}
+		}
+		if (threadIds == null) {
+			threadIds = new int[0];
+		}
+		Arrays.sort(threadIds);
+		if (threadIds.length > 0) {
+			currentThreadId = threadIds[0];
+		}
+	}
+
+	void parseThreadIds(MITuple tuple) {
+		MIResult[] results = tuple.getMIResults();
+		threadIds = new int[results.length];
+		for (int i = 0; i < results.length; i++) {
+			String var = results[i].getVariable();
+			if (var.equals("thread-id")) { //$NON-NLS-1$
+				MIValue value = results[i].getMIValue();
+				if (value instanceof MIConst) {
+					String str = ((MIConst) value).getCString();
+					try {
+						threadIds[i] = Integer.parseInt(str.trim());
+					} catch (NumberFormatException e) {
+					}
+				}
+			}
+		}
+	}
+}
diff --git a/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/StandardMacOSCommandFactory.java b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/StandardMacOSCommandFactory.java
index f2b4065d382..24a1617fd96 100644
--- a/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/StandardMacOSCommandFactory.java
+++ b/debug/org.eclipse.cdt.debug.mi.core/mi/org/eclipse/cdt/debug/mi/core/command/factories/macos/StandardMacOSCommandFactory.java
@@ -7,12 +7,14 @@
  *
  * Contributors:
  * Nokia - Initial API and implementation
- * Marc-Andre Laperle - patch for bug #250037
+ * Marc-Andre Laperle - patch for bug #250037, 294538
  *******************************************************************************/
 package org.eclipse.cdt.debug.mi.core.command.factories.macos;
 
 import java.io.File;
 
+import org.eclipse.cdt.debug.mi.core.command.CLIInfoProc;
+import org.eclipse.cdt.debug.mi.core.command.CLIInfoThreads;
 import org.eclipse.cdt.debug.mi.core.command.MIEnvironmentCD;
 import org.eclipse.cdt.debug.mi.core.command.MIInfoSharedLibrary;
 import org.eclipse.cdt.debug.mi.core.command.MIVarUpdate;
@@ -54,5 +56,12 @@ public class StandardMacOSCommandFactory extends StandardCommandFactory {
 		return new MacOSMIVarUpdate(getMIVersion(), name);
 	}
 	
+	public CLIInfoProc createCLIInfoProc() {
+		return new MacOSCLIInfoPID();
+	}
+
+	public CLIInfoThreads createCLIInfoThreads() {
+		return new MacOSCLIInfoThreads();
+	}
 
 }