Ruby: Fix ConstantAccessCfgNode.getValueText

hmac · hmac · commit b4b91e84a3fe · 2022-01-06T12:25:19.000+13:00
The superclass definition uses SSA, which doesn't track constants.
diff --git a/ruby/ql/lib/codeql/ruby/controlflow/CfgNodes.qll b/ruby/ql/lib/codeql/ruby/controlflow/CfgNodes.qll
@@ -390,6 +390,8 @@ module ExprNodes {
 
     /** Gets the scope expression. */
     final ExprCfgNode getScopeExpr() { e.hasCfgChild(e.getScopeExpr(), this, result) }
+
+    override string getValueText() { result = this.getExpr().getValueText() }
   }
 
   private class StmtSequenceChildMapping extends ExprChildMapping, StmtSequence {

Original file line number	Diff line number	Diff line change
`@@ -390,6 +390,8 @@ module ExprNodes {`
`390`	`390`
`391`	`391`	`/** Gets the scope expression. */`
`392`	`392`	`final ExprCfgNode getScopeExpr() { e.hasCfgChild(e.getScopeExpr(), this, result) }`
	`393`	`+`
	`394`	`+ override string getValueText() { result = this.getExpr().getValueText() }`
`393`	`395`	`}`
`394`	`396`
`395`	`397`	`private class StmtSequenceChildMapping extends ExprChildMapping, StmtSequence {`