Don't allow ChildNodesHelper.Count to be less than zero

DustinCampbell · DustinCampbell · commit d366b87fbf53 · 2023-11-27T08:47:23.000-08:00
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/src/DefaultRazorIntermediateNodeLoweringPhase.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/src/DefaultRazorIntermediateNodeLoweringPhase.cs
@@ -526,7 +526,7 @@ protected static SyntaxList<SyntaxToken> MergeLiterals(
         /// </summary>
         protected readonly struct ChildNodesHelper(ChildSyntaxList list, int start = 0)
         {
-            public int Count { get; } = list.Count - start;
+            public int Count { get; } = Math.Max(list.Count - start, 0);
 
             public SyntaxNode this[int index] => list[start + index];
 

Original file line number	Diff line number	Diff line change
`@@ -526,7 +526,7 @@ protected static SyntaxList<SyntaxToken> MergeLiterals(`
`526`	`526`	`/// </summary>`
`527`	`527`	`protected readonly struct ChildNodesHelper(ChildSyntaxList list, int start = 0)`
`528`	`528`	`{`
`529`		`- public int Count { get; } = list.Count - start;`
	`529`	`+ public int Count { get; } = Math.Max(list.Count - start, 0);`
`530`	`530`
`531`	`531`	`public SyntaxNode this[int index] => list[start + index];`
`532`	`532`