From 69634aa998bcf6b1c78d2751b1ddc0aa61a96aa8 Mon Sep 17 00:00:00 2001
From: Todd Grunke <toddgrun@microsoft.com>
Date: Sat, 13 Dec 2025 08:17:13 -0800
Subject: [PATCH] Copy slightly less data during SourceText.computeContentHash

As outlined in a comment in the code, just use ImmutableCollectionsMarshal.AsImmutableArray to make the code a bit simpler and more efficient.
---
 src/Compilers/Core/Portable/Text/SourceText.cs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/Compilers/Core/Portable/Text/SourceText.cs b/src/Compilers/Core/Portable/Text/SourceText.cs
index 885c88e18e46e..97f0f07d291f0 100644
--- a/src/Compilers/Core/Portable/Text/SourceText.cs
+++ b/src/Compilers/Core/Portable/Text/SourceText.cs
@@ -656,10 +656,7 @@ ImmutableArray<byte> computeContentHash()
                         hash.Append(MemoryMarshal.AsBytes(charSpan));
                     }
 
-                    // Switch this to ImmutableCollectionsMarshal.AsImmutableArray(hash.GetHashAndReset()) when we move to S.C.I v8.
-                    Span<byte> destination = stackalloc byte[128 / 8];
-                    hash.GetHashAndReset(destination);
-                    return destination.ToImmutableArray();
+                    return ImmutableCollectionsMarshal.AsImmutableArray(hash.GetHashAndReset());
                 }
                 finally
                 {