diff --git a/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/MIExpressionsTest.java b/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/MIExpressionsTest.java
index de9d816596e..9290fabd786 100644
--- a/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/MIExpressionsTest.java
+++ b/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/MIExpressionsTest.java
@@ -93,6 +93,11 @@ public class MIExpressionsTest extends BaseParametrizedTestCase {
     public void doBeforeTest() throws Exception {
     	super.doBeforeTest();
 
+    	// Disabling this suite for GDB < 7.5. There are issues when the test 
+    	// binaries are compiled with gcc > 4.8, which uses DWARF version 4.
+    	// see bug 512303
+    	assumeGdbVersionAtLeast(ITestConstants.SUFFIX_GDB_7_5);
+    	
     	fSession = getGDBLaunch().getSession();
         Runnable runnable = new Runnable() {
             @Override
diff --git a/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/StepIntoSelectionTest.java b/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/StepIntoSelectionTest.java
index 2a040cc1d4f..94d0c25c136 100644
--- a/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/StepIntoSelectionTest.java
+++ b/dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/src/org/eclipse/cdt/tests/dsf/gdb/tests/StepIntoSelectionTest.java
@@ -108,6 +108,11 @@ public class StepIntoSelectionTest extends BaseParametrizedTestCase {
 	@Override
 	public void doBeforeTest() throws Exception {
 		super.doBeforeTest();
+		
+		// Disabling this suite for GDB < 7.5. There are issues when the test 
+    	// binaries are compiled with gcc > 4.8, which uses DWARF version 4.
+    	// see bug 512303
+    	assumeGdbVersionAtLeast(ITestConstants.SUFFIX_GDB_7_5);
 
 		Runnable runnable = new Runnable() {
 			@Override