### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java,v
retrieving revision 1.340
diff -u -r1.340 ProblemReporter.java
--- compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	12 Feb 2007 02:36:05 -0000	1.340
+++ compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	15 Feb 2007 07:48:05 -0000
@@ -3292,6 +3292,16 @@
 		reference.sourceEnd);
 }
 public void invalidType(ASTNode location, TypeBinding type) {
+	if (type instanceof ReferenceBinding) {
+		if (isRecoveredName(((ReferenceBinding)type).compoundName)) return;
+	}
+	else if (type instanceof ArrayBinding) {
+		TypeBinding leafType = ((ArrayBinding)type).leafComponentType;
+		if (leafType instanceof ReferenceBinding) {
+			if (isRecoveredName(((ReferenceBinding)leafType).compoundName)) return;
+		}
+	}
+	
 	int id = IProblem.UndefinedType; // default
 	switch (type.problemId()) {
 		case ProblemReasons.NotFound :
Index: grammar/java.g
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/grammar/java.g,v
retrieving revision 1.1
diff -u -r1.1 java.g
--- grammar/java.g	4 Jan 2007 14:09:02 -0000	1.1
+++ grammar/java.g	15 Feb 2007 07:48:05 -0000
@@ -654,6 +654,7 @@
 /.$putCase consumeFormalParameter(true); $break ./
 /:$readableName FormalParameter:/
 /:$compliance 1.5:/
+/:$recovery_template Identifier Identifier:/
 
 ClassTypeList -> ClassTypeElt
 ClassTypeList ::= ClassTypeList ',' ClassTypeElt
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/parser/ParserTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/parser/ParserTest.java,v
retrieving revision 1.20
diff -u -r1.20 ParserTest.java
--- src/org/eclipse/jdt/core/tests/compiler/parser/ParserTest.java	6 Nov 2006 17:32:11 -0000	1.20
+++ src/org/eclipse/jdt/core/tests/compiler/parser/ParserTest.java	15 Feb 2007 07:48:07 -0000
@@ -707,4 +707,46 @@
 		options // custom options
 	);
 }
+
+/*
+ * https://bugs.eclipse.org/bugs/show_bug.cgi?id=173992
+ */
+public void test027() {
+	this.runNegativeTest(
+		new String[] {
+			"X.java",
+			"import java.io.EOFException;\n" +
+			"import java.io.FileNotFoundException;\n" +
+			"import java.io.IOException;\n" +
+			"import org.xml.sax.SAXException;\n" +
+			"public class X {\n" +
+        		"public void doSomething() throws FileNotFoundException, EOFException, SAXException{\n" +
+        		"\n" +
+        		"}\n" +
+			"public void doSomethingElse() {\n" +
+        		"try {\n" +
+                	"	doSomething();\n" +
+        		"}\n" +
+       			" catch ( SAXException exception) {\n" +
+			"\n" +
+      			"}  \n" +             
+        		"catch ( FileNotFoundException exception ) {\n" +
+			"\n" +
+        		"}    \n" +           
+       			"catch (\n" + 
+                	"	// working before the slashes\n" +
+        		") {\n" +
+			"\n" +
+        		"} \n" +              
+        		"} \n" + 
+        	"}\n"
+        	},
+		"----------\n" + 
+		"1. ERROR in X.java (at line 19)\n" +
+		"	catch (\n" +
+		"	      ^\n" +
+		"Syntax error on token \"(\", FormalParameter expected after this token\n" +
+		"----------\n"
+	);
+}
 }