From ae8da7ef883a63be6d6ac1d3e731e8e6e48d2284 Mon Sep 17 00:00:00 2001
From: "Igor V. Kovalenko" <igor.v.kovalenko@gmail.com>
Date: Thu, 19 Jan 2023 23:25:12 +0300
Subject: [PATCH] Add variable read/write flag test for c++20 three-way
 comparison

---
 .../core/parser/tests/ast2/AST2TestBase.java   |  7 ++++++-
 .../tests/ast2/VariableReadWriteFlagsTest.java | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java
index 5c6b2dacd16..13743cbd05b 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java
@@ -539,7 +539,12 @@ public abstract class AST2TestBase extends SemanticTestBase {
 		}
 
 		public AST2AssertionHelper(String contents, ParserLanguage lang) throws ParserException {
-			super(contents, parse(contents, lang, ScannerKind.GNU, false));
+			this(contents, lang, ScannerKind.GNU);
+		}
+
+		public AST2AssertionHelper(String contents, ParserLanguage lang, ScannerKind scannerKind)
+				throws ParserException {
+			super(contents, parse(contents, lang, scannerKind, false));
 			this.isCPP = lang.isCPP();
 		}
 	}
diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/VariableReadWriteFlagsTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/VariableReadWriteFlagsTest.java
index a39ecccaded..cd95b8ad84d 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/VariableReadWriteFlagsTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/VariableReadWriteFlagsTest.java
@@ -17,6 +17,7 @@ import java.io.IOException;
 import java.util.Optional;
 
 import org.eclipse.cdt.core.dom.ast.IASTName;
+import org.eclipse.cdt.core.parser.ParserLanguage;
 import org.eclipse.cdt.internal.core.dom.parser.c.CVariableReadWriteFlags;
 import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVariableReadWriteFlags;
 import org.eclipse.cdt.internal.core.parser.ParserException;
@@ -36,6 +37,10 @@ public class VariableReadWriteFlagsTest extends AST2TestBase {
 			super(contents, isCPP);
 		}
 
+		AssertionHelper(String contents, ParserLanguage lang, ScannerKind scannerKind) throws ParserException {
+			super(contents, lang, scannerKind);
+		}
+
 		void assertReadWriteFlags(String context, String name, Optional<Integer> expectedFlags) throws Exception {
 			IASTName variable = findName(context, name);
 			assertNotNull(variable);
@@ -95,6 +100,11 @@ public class VariableReadWriteFlagsTest extends AST2TestBase {
 		return new AssertionHelper(code, true);
 	}
 
+	protected AssertionHelper getCPP20AssertionHelper() throws ParserException, IOException {
+		String code = getAboveComment();
+		return new AssertionHelper(code, ParserLanguage.CPP, ScannerKind.STDCPP20);
+	}
+
 	//	int test(int a) {
 	//	  a = 2;
 	//	  a *= 3;
@@ -107,6 +117,14 @@ public class VariableReadWriteFlagsTest extends AST2TestBase {
 		a.assertReadWriteFlags("a + 1", "a", READ);
 	}
 
+	//	auto test(int a) {
+	//	  return a <=> 1;
+	//	}
+	public void testThreeWayComparisonAccess() throws Exception {
+		AssertionHelper a = getCPP20AssertionHelper();
+		a.assertReadWriteFlags("a <=> 1", "a", READ);
+	}
+
 	//	class C {
 	//	public:
 	//	  C(int);