### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: model/org/eclipse/jdt/internal/core/JavaModelStatus.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/JavaModelStatus.java,v
retrieving revision 1.49
diff -u -r1.49 JavaModelStatus.java
--- model/org/eclipse/jdt/internal/core/JavaModelStatus.java	18 Jan 2011 05:42:02 -0000	1.49
+++ model/org/eclipse/jdt/internal/core/JavaModelStatus.java	25 Apr 2011 13:56:51 -0000
@@ -344,7 +344,7 @@
 
 				case CLASSPATH_CYCLE:
 					javaProject = (IJavaProject)this.elements[0];
-					return Messages.bind(Messages.classpath_cycle, javaProject.getElementName());
+					return Messages.bind(Messages.classpath_cycle, new String[] {javaProject.getElementName(), this.string});
 
 				case DISABLED_CP_EXCLUSION_PATTERNS:
 					javaProject = (IJavaProject)this.elements[0];
Index: model/org/eclipse/jdt/internal/core/JavaProject.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/JavaProject.java,v
retrieving revision 1.445
diff -u -r1.445 JavaProject.java
--- model/org/eclipse/jdt/internal/core/JavaProject.java	8 Mar 2011 14:06:16 -0000	1.445
+++ model/org/eclipse/jdt/internal/core/JavaProject.java	25 Apr 2011 13:56:51 -0000
@@ -406,9 +406,29 @@
 							throw new JavaModelException(e);
 						}
 					} else {
+						IJavaProject[] projectsInCycle;
+						String cycleString = "";	 //$NON-NLS-1$
+						if (cycleParticipants.isEmpty()) {
+							projectsInCycle = null;
+						} else {
+							projectsInCycle = new IJavaProject[cycleParticipants.size()];
+							Iterator it = cycleParticipants.iterator();
+							int k = 0;
+							while (it.hasNext()) {
+								//projectsInCycle[i++] = (IPath) it.next();
+								IResource member = workspaceRoot.findMember((IPath) it.next());
+								if (member != null && member.getType() == IResource.PROJECT){
+									projectsInCycle[k] = JavaCore.create((IProject)member);
+									if (projectsInCycle[k] != null) {
+										if (k != 0) cycleString += ", "; //$NON-NLS-1$
+										cycleString += projectsInCycle[k++].getElementName();
+									}
+								}
+							}
+						}
 						// create new marker
 						project.createClasspathProblemMarker(
-							new JavaModelStatus(IJavaModelStatusConstants.CLASSPATH_CYCLE, project));
+							new JavaModelStatus(IJavaModelStatusConstants.CLASSPATH_CYCLE, project, cycleString));
 					}
 				} else {
 					project.flushClasspathProblemMarkers(true, false);
Index: model/org/eclipse/jdt/internal/core/util/messages.properties
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/messages.properties,v
retrieving revision 1.83
diff -u -r1.83 messages.properties
--- model/org/eclipse/jdt/internal/core/util/messages.properties	18 Jan 2011 05:42:02 -0000	1.83
+++ model/org/eclipse/jdt/internal/core/util/messages.properties	25 Apr 2011 13:56:51 -0000
@@ -141,7 +141,7 @@
 classpath_cannotUseLibraryAsOutput = Source folder ''{0}'' in project ''{2}'' cannot output to library ''{1}''
 classpath_closedProject = Required project ''{0}'' needs to be open
 classpath_couldNotWriteClasspathFile = Could not write ''.classpath'' file of project ''{0}'': {1}
-classpath_cycle = A cycle was detected in the build path of project ''{0}''
+classpath_cycle = A cycle was detected in the build path of project ''{0}''. The cycle consists of projects '{'{1}'}'
 classpath_duplicateEntryPath = Build path contains duplicate entry: ''{0}'' for project ''{1}''
 classpath_illegalContainerPath = Illegal classpath container path: ''{0}'' in project ''{1}'', must have at least one segment (containerID+hints)
 classpath_illegalEntryInClasspathFile = Illegal entry in ''.classpath'' of project ''{0}'' file: {1}
#P org.eclipse.jdt.core.tests.builder
Index: src/org/eclipse/jdt/core/tests/builder/MultiProjectTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.builder/src/org/eclipse/jdt/core/tests/builder/MultiProjectTests.java,v
retrieving revision 1.58
diff -u -r1.58 MultiProjectTests.java
--- src/org/eclipse/jdt/core/tests/builder/MultiProjectTests.java	1 Mar 2011 18:17:14 -0000	1.58
+++ src/org/eclipse/jdt/core/tests/builder/MultiProjectTests.java	25 Apr 2011 13:56:56 -0000
@@ -385,9 +385,9 @@
 			fullBuild();
 
 			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y", "p3.Z", "p1.X"});//$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$//$NON-NLS-5$//$NON-NLS-6$//$NON-NLS-7$
-			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
-			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
-			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 
 			JavaCore.setOptions(options);
 		} finally {
@@ -479,12 +479,12 @@
 			fullBuild();
 
 			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y", "p3.Z", "p1.X"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$ //$NON-NLS-6$//$NON-NLS-7$
-			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 			expectingOnlySpecificProblemsFor(p2,new Problem[]{
 					new Problem("p2", "The method bar(Y, int) in the type X is not applicable for the arguments (Y)", c2, 106, 109, CategorizedProblem.CAT_MEMBER, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
-					new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+					new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
-			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 
 			JavaCore.setOptions(options);
 		} finally {
@@ -576,9 +576,9 @@
 			fullBuild();
 
 			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y", "p3.Z", "p1.X"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$ //$NON-NLS-6$//$NON-NLS-7$
-			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
-			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
-			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 
 			env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
 				"package p1;\n"+ //$NON-NLS-1$
@@ -592,12 +592,12 @@
 			incrementalBuild();
 
 			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z"}); //$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$
-			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 			expectingOnlySpecificProblemsFor(p2,new Problem[]{
 					new Problem("p2", "The method bar(Y, int) in the type X is not applicable for the arguments (Y)", c2, 106, 109, CategorizedProblem.CAT_MEMBER, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
-					new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+					new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
-			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 
 			JavaCore.setOptions(options);
 		} finally {
@@ -678,18 +678,18 @@
 			fullBuild();
 
 			expectingCompilingOrder(new String[]{"p2.Y", "p3.Z", "p2.Y"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$
-			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 			expectingOnlySpecificProblemsFor(p2,new Problem[]{
 				new Problem("p2", "X cannot be resolved to a type", c2, 87, 88, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
 				new Problem("p2", "The method foo() from the type Z refers to the missing type X", c2, 93, 96, CategorizedProblem.CAT_MEMBER, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
 				new Problem("p2", "The import p1 cannot be resolved", c2, 19, 21, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
 				new Problem("p2", "X cannot be resolved to a type", c2, 73, 74, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
-				new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+				new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
 			expectingOnlySpecificProblemsFor(p3,new Problem[]{
 				new Problem("p3", "X cannot be resolved to a type", c3, 51, 52, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
 				new Problem("p3", "The import p1 cannot be resolved", c3, 19, 21, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
-				new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+				new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
 
 			env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
@@ -703,9 +703,9 @@
 				);
 			incrementalBuild();
 			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y"}); //$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$
-			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
-			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
-			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
+			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
 
 			JavaCore.setOptions(options);
 		} finally {
@@ -771,11 +771,11 @@
 			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p1.X", "p2.Y"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$
 			expectingOnlySpecificProblemsFor(p1,new Problem[]{
 				new Problem("p1", "The import p22 cannot be resolved", c1, 32, 35, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
-				new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+				new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
 			expectingOnlySpecificProblemsFor(p2,new Problem[]{
 				new Problem("p2", "The import p11 cannot be resolved", c2, 32, 35, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
-				new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+				new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
 
 			env.addClass(root1, "p11", "XX", //$NON-NLS-1$ //$NON-NLS-2$
@@ -794,11 +794,11 @@
 			expectingCompilingOrder(new String[]{"p11.XX", "p22.YY", "p2.Y", "p1.X"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$
 			expectingOnlySpecificProblemsFor(p1,new Problem[]{
 				new Problem("p1", "The import p22 is never used", c1, 32, 35, CategorizedProblem.CAT_UNNECESSARY_CODE, IMarker.SEVERITY_WARNING),//$NON-NLS-1$ //$NON-NLS-2$
-				new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+				new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
 			expectingOnlySpecificProblemsFor(p2,new Problem[]{
 				new Problem("p2", "The import p11 is never used", c2, 32, 35, CategorizedProblem.CAT_UNNECESSARY_CODE, IMarker.SEVERITY_WARNING),//$NON-NLS-1$ //$NON-NLS-2$
-				new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+				new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 			});
 
 			JavaCore.setOptions(options);
@@ -879,13 +879,13 @@
 		fullBuild();
 
 		expectingOnlySpecificProblemsFor(p1,new Problem[]{
-			new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+			new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 		});
 		expectingOnlySpecificProblemsFor(p2,new Problem[]{
-			new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+			new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 		});
 		expectingOnlySpecificProblemsFor(p3,new Problem[]{
-			new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+			new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 		});
 
 	} finally {
@@ -965,13 +965,13 @@
 		fullBuild();
 
 		expectingOnlySpecificProblemsFor(p1,new Problem[]{
-			new Problem("p1", "A cycle was detected in the build path of project 'P1'", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+			new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P2, P1, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 		});
 		expectingOnlySpecificProblemsFor(p2,new Problem[]{
-			new Problem("p2", "A cycle was detected in the build path of project 'P2'", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+			new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P2, P1, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 		});
 		expectingOnlySpecificProblemsFor(p3,new Problem[]{
-			new Problem("p3", "A cycle was detected in the build path of project 'P3'", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
+			new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P2, P1, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
 		});
 
 	} finally {
#P org.eclipse.jdt.core.tests.model
Index: src/org/eclipse/jdt/core/tests/model/ClasspathTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/ClasspathTests.java,v
retrieving revision 1.225
diff -u -r1.225 ClasspathTests.java
--- src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	4 Mar 2011 13:51:47 -0000	1.225
+++ src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	25 Apr 2011 13:57:04 -0000
@@ -4360,11 +4360,11 @@
 				"");
 		this.assertMarkers(
 			"Unexpected markers for project A",
-			"A cycle was detected in the build path of project 'A'",
+			"A cycle was detected in the build path of project 'A'. The cycle consists of projects {A, B}",
 			projectA);
 		this.assertMarkers(
 			"Unexpected markers for project B",
-			"A cycle was detected in the build path of project 'B'",
+			"A cycle was detected in the build path of project 'B'. The cycle consists of projects {A, B}",
 			projectB);
 
 		// delete project B
@@ -4384,11 +4384,11 @@
 				"");
 		this.assertMarkers(
 			"Unexpected markers for project A after adding project B back",
-			"A cycle was detected in the build path of project 'A'",
+			"A cycle was detected in the build path of project 'A'. The cycle consists of projects {A, B}",
 			projectA);
 		this.assertMarkers(
 			"Unexpected markers for project B after adding project B back",
-			"A cycle was detected in the build path of project 'B'",
+			"A cycle was detected in the build path of project 'B'. The cycle consists of projects {A, B}",
 			projectB);
 
 	} finally {