### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core.tests.model
Index: src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java,v
retrieving revision 1.98.4.3
diff -u -r1.98.4.3 ReconcilerTests.java
--- src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java	3 Aug 2006 17:32:13 -0000	1.98.4.3
+++ src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java	30 Aug 2006 13:31:47 -0000
@@ -22,6 +22,7 @@
 import org.eclipse.core.runtime.OperationCanceledException;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.jdt.core.*;
+import org.eclipse.jdt.core.compiler.CategorizedProblem;
 import org.eclipse.jdt.core.compiler.CompilationParticipant;
 import org.eclipse.jdt.core.compiler.IProblem;
 import org.eclipse.jdt.core.compiler.ReconcileContext;
@@ -2358,6 +2359,35 @@
 		project.setOption(JavaCore.COMPILER_SOURCE, originalSourceLevel);
 	}
 }
+/*
+ * Ensures that a problem reporting session is not started during reconcile if a participant reports an error
+ * and if the working copy is already consistent and the forceProblemDetection flag is false.
+ * (regression test for bug 154170 Printing warnings breaks in-editor quick fixes)
+ */
+public void testReconcileParticipant08() throws CoreException {
+	// set working copy contents and ensure it is consistent
+	String contents = 
+		"package p1;\n" +
+		"public class X {\n" +
+		"  public void bar() {\n" +
+		"  }\n" +
+		"}";
+	setWorkingCopyContents(contents);
+	this.workingCopy.makeConsistent(null);
+	this.problemRequestor.initialize(contents.toCharArray());
+	
+	// reconcile with a participant adding a list of problems
+	new ReconcileParticipant() {
+		public void reconcile(ReconcileContext context) {
+			context.putProblems("test.marker", new CategorizedProblem[] {});
+		}
+	};
+	this.workingCopy.reconcile(ICompilationUnit.NO_AST, false, null, null);
+	assertProblems(
+		"Unexpected problems",
+		""
+	);
+}
 /**
  * Ensures that the reconciler reconciles the new contents with the current
  * contents, updating the structure of this reconciler's compilation
#P org.eclipse.jdt.core
Index: model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java,v
retrieving revision 1.39
diff -u -r1.39 ReconcileWorkingCopyOperation.java
--- model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java	29 Mar 2006 03:08:48 -0000	1.39
+++ model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java	30 Aug 2006 13:31:48 -0000
@@ -61,6 +61,7 @@
 		}
 	
 		CompilationUnit workingCopy = getWorkingCopy();
+		boolean wasConsistent = workingCopy.isConsistent();
 		IProblemRequestor problemRequestor = workingCopy.getPerWorkingCopyInfo();
 		this.resolveBindings |= problemRequestor != null && problemRequestor.isActive();
 		
@@ -78,7 +79,7 @@
 			makeConsistent(workingCopy, problemRequestor);
 	
 		// report problems
-		if (this.problems != null) {
+		if (this.problems != null && (this.forceProblemDetection || !wasConsistent)) {
 			try {
 				problemRequestor.beginReporting();
 				for (Iterator iteraror = this.problems.values().iterator(); iteraror.hasNext();) {