From 9e874b518d76624fda3553dd3c341ec5a3147b62 Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Thu, 15 Jan 2026 23:57:25 +0100
Subject: [PATCH 1/2] Adapt slice filter to use the correct Array/String index
 range on TruffleRuby

---
 lib/liquid/standardfilters.rb | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/lib/liquid/standardfilters.rb b/lib/liquid/standardfilters.rb
index 24e135d91..9662c490a 100644
--- a/lib/liquid/standardfilters.rb
+++ b/lib/liquid/standardfilters.rb
@@ -8,10 +8,12 @@ module StandardFilters
     MAX_I32 = (1 << 31) - 1
     private_constant :MAX_I32
 
-    MIN_I64 = -(1 << 63)
-    MAX_I64 = (1 << 63) - 1
-    I64_RANGE = MIN_I64..MAX_I64
-    private_constant :MIN_I64, :MAX_I64, :I64_RANGE
+    INDEX_RANGE = if RUBY_ENGINE == 'truffleruby'
+      (-(1 << 31))..((1 << 31) - 1)
+    else
+      (-(1 << 63))..((1 << 63) - 1)
+    end
+    private_constant :INDEX_RANGE
 
     HTML_ESCAPE = {
       '&' => '&amp;',
@@ -214,11 +216,11 @@ def slice(input, offset, length = nil)
           Utils.to_s(input).slice(offset, length) || ''
         end
       rescue RangeError
-        if I64_RANGE.cover?(length) && I64_RANGE.cover?(offset)
+        if INDEX_RANGE.cover?(length) && INDEX_RANGE.cover?(offset)
           raise # unexpected error
         end
-        offset = offset.clamp(I64_RANGE)
-        length = length.clamp(I64_RANGE)
+        offset = offset.clamp(INDEX_RANGE)
+        length = length.clamp(INDEX_RANGE)
         retry
       end
     end

From 9a0f5ddd318ecaaa0dcb62037cdbf2ecb5449064 Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Fri, 16 Jan 2026 00:24:42 +0100
Subject: [PATCH 2/2] Add TruffleRuby in CI

---
 .github/workflows/liquid.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/liquid.yml b/.github/workflows/liquid.yml
index c018a4954..1c369e8e3 100644
--- a/.github/workflows/liquid.yml
+++ b/.github/workflows/liquid.yml
@@ -22,6 +22,7 @@ jobs:
             }
           - { ruby: 4.0, allowed-failure: false, rubyopt: "--yjit" }
           - { ruby: 4.0, allowed-failure: false, rubyopt: "--zjit" }
+          - { ruby: truffleruby, allowed-failure: false }
 
           # Head can have failures due to being in development
           - { ruby: head, allowed-failure: true }
@@ -44,6 +45,9 @@ jobs:
         continue-on-error: ${{ matrix.entry.allowed-failure }}
         env:
           RUBYOPT: ${{ matrix.entry.rubyopt }}
+          # TruffleRuby parses methods lazily by default, but we need to hold onto Symbols
+          # inside methods eagerly for test_does_not_add_drop_methods_to_symbol_table
+          TRUFFLERUBYOPT: '--experimental-options --lazy-calltargets=false'
 
   spec:
     runs-on: ubuntu-latest