Fix Elixir 1.20 warnings

.github/workflows/main.yml

@@ -20,8 +20,8 @@ jobs:
             elixir: 1.18.1
           - otp: 27.0
             elixir: 1.17.3
-          - otp: 24.3
-            elixir: 1.12.3
+          - otp: 26.0
+            elixir: 1.16.3
 
     env:
       MIX_ENV: test
@@ -125,8 +125,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        otp: [24.2]
-        elixir: [1.14]
+        otp: [26.0]
+        elixir: [1.16.3]
 
     env:
       MIX_ENV: test

lib/protobuf/decoder.ex

@@ -133,13 +133,13 @@ defmodule Protobuf.Decoder do
   end
 
   defdecoderp skip_delimited(message, props, groups) do
-    <<_skip::bytes-size(value), rest::bits>> = rest
+    <<_skip::bytes-size(^value), rest::bits>> = rest
     skip_field(rest, message, props, groups)
   end
 
   defp skip_bits(binary, length) do
     case binary do
-      <<_::bits-size(length), rest::bits>> -> rest
+      <<_::bits-size(^length), rest::bits>> -> rest
       _ -> raise DecodeError, message: "insufficient data for skipping #{length} bits"
     end
   end
@@ -152,7 +152,7 @@ defmodule Protobuf.Decoder do
     bytes_remaining = byte_size(rest)
 
     if value <= bytes_remaining do
-      <<bytes::bytes-size(value), rest::bits>> = rest
+      <<bytes::bytes-size(^value), rest::bits>> = rest
       handle_value(rest, field_number, wire_delimited(), bytes, message, props)
     else
       field =

lib/protobuf/json/rfc3339.ex

@@ -154,7 +154,7 @@ defmodule Protobuf.JSON.RFC3339 do
     literal_size = byte_size(literal)
 
     case string do
-      <<^literal::bytes-size(literal_size), rest::binary>> -> rest
+      <<^literal::bytes-size(^literal_size), rest::binary>> -> rest
       other -> throw("expected literal #{inspect(literal)}, got: #{inspect(other)}")
     end
   end
@@ -179,7 +179,7 @@ defmodule Protobuf.JSON.RFC3339 do
 
   defp eat_digits(string, count) do
     case string do
-      <<digits::bytes-size(count), rest::binary>> ->
+      <<digits::bytes-size(^count), rest::binary>> ->
         case Integer.parse(digits) do
           {_digits, ""} ->
             rest

mix.exs

@@ -9,7 +9,7 @@ defmodule Protobuf.Mixfile do
     [
       app: :protobuf,
       version: @version,
-      elixir: "~> 1.12",
+      elixir: "~> 1.16",
       build_embedded: Mix.env() == :prod,
       start_permanent: Mix.env() == :prod,
       dialyzer: [plt_add_apps: [:mix, :jason], flags: [:no_improper_lists]],