diff --git a/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts b/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts
index 206c80cece2..f57045592bd 100644
--- a/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts
+++ b/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts
@@ -164,3 +164,11 @@ int main()
 //%CPP
 static_assert(true, "Should always pass");
 static_assert(sizeof (int) == 4);
+
+//!Inline namespace
+//%CPP
+inline namespace InlnNS
+{
+
+
+}
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/DeclarationWriter.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/DeclarationWriter.java
index 7d7b6111869..27aada07f67 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/DeclarationWriter.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/DeclarationWriter.java
@@ -203,6 +203,9 @@ public class DeclarationWriter extends NodeWriter {
 	}
 
 	private void writeNamespaceDefinition(ICPPASTNamespaceDefinition namespaceDefinition) {
+		if (namespaceDefinition.isInline()) {
+			scribe.printStringSpace(Keywords.INLINE);
+		}
 		scribe.printStringSpace(Keywords.NAMESPACE);
 		namespaceDefinition.getName().accept(visitor);
 		writeGCCAttributes(namespaceDefinition, EnumSet.of(SpaceLocation.BEFORE));
diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java
index 7cec2794187..7831a61b246 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java
@@ -1089,6 +1089,12 @@ public class CodeFormatterVisitor extends ASTVisitor implements ICPPASTVisitor,
 	public int visit(ICPPASTNamespaceDefinition node) {
 		if (!enterNode(node)) { return PROCESS_SKIP; }
 		final int line= scribe.line;
+
+		if (node.isInline()) {
+			scribe.printNextToken(Token.t_inline, false);
+			scribe.space();
+		}
+
 		// namespace <name>
 		scribe.printNextToken(Token.t_namespace, false);
 		scribe.space();
diff --git a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
index 0b56b5b6905..30e51cc960e 100644
--- a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
+++ b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
@@ -3371,4 +3371,17 @@ public class CodeFormatterTest extends BaseUITestCase {
 	public void testSwitchInitStatementFormat_4() throws Exception {
 		assertFormatterResult();
 	}
+
+	//namespace na {
+	//inline namespace nb {
+	//}
+	//}
+
+	//namespace na {
+	//inline namespace nb {
+	//}
+	//}
+	public void testInlineNamespace_Bug532849() throws Exception {
+		assertFormatterResult();
+	}
 }