diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
index bc079920ddb..100869ea675 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
@@ -215,6 +215,16 @@ public class AST2CPPTests extends AST2BaseTest {
 		parseAndCheckBindings( getAboveComment() );
 	}
 	
+	// signed int si(0);
+	// unsigned   u(10U);
+	// signed     s(-1);
+	// short      sh(0);
+	// long       l(0L);
+	// long long  ll(0LL);
+	public void testInitializeUnsigned_Bug245070() throws Exception {
+		parseAndCheckBindings(getAboveComment(), ParserLanguage.CPP, true);
+	}
+	
 	public void testBug43579() throws Exception {
 		parseAndCheckBindings("class A { int m; }; \n A * a; int A::*pm; \n int f(){} \n int f(int); \n int x = f(a->*pm);"); //$NON-NLS-1$
 		parseAndCheckBindings("class A { int m; }; \n A * a; int A::*pm; \n int f(){} \n int f(int); \n int x = f(a->*pm);"); //$NON-NLS-1$
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
index 3e47d2fc354..4560187d2df 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
@@ -3110,16 +3110,26 @@ public class GNUCPPSourceParser extends AbstractGNUSourceCodeParser {
 
 	private boolean canHaveConstructorInitializer(IASTDeclSpecifier declspec) {
 		if (declspec instanceof ICPPASTSimpleDeclSpecifier) {
-			ICPPASTSimpleDeclSpecifier simpleSpecifier= (ICPPASTSimpleDeclSpecifier) declspec;
-			switch(simpleSpecifier.getType()) {
+			ICPPASTSimpleDeclSpecifier sspec= (ICPPASTSimpleDeclSpecifier) declspec;
+			switch(sspec.getType()) {
 			case IASTSimpleDeclSpecifier.t_unspecified:
+				if (sspec.isLong() || sspec.isShort() || sspec.isSigned() || sspec.isUnsigned())
+					return true;
+				if (sspec instanceof IGPPASTSimpleDeclSpecifier) {
+					final IGPPASTSimpleDeclSpecifier gspec = (IGPPASTSimpleDeclSpecifier) sspec;
+					if (gspec.isLongLong())
+						return true;
+				}
+				return false;
+				
 			case IASTSimpleDeclSpecifier.t_void:
 				return false;
 			}
-			if (simpleSpecifier.isFriend()) {
+			
+			if (sspec.isFriend()) {
 				return false;
 			}
-			if (simpleSpecifier.getStorageClass() == IASTDeclSpecifier.sc_typedef) {
+			if (sspec.getStorageClass() == IASTDeclSpecifier.sc_typedef) {
 				return false;
 			}
 		}