From 68a21c5a5952913d6192be747efd245887bc36cc Mon Sep 17 00:00:00 2001
From: Alexis Placet <2400067+Alex-PLACET@users.noreply.github.com>
Date: Thu, 30 Apr 2026 13:24:54 +0200
Subject: [PATCH 1/4] Fix substring calculation in CSV cell parsing and add
 lexical_cast for signed and unsigned char

---
 include/xtensor/io/xcsv.hpp | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/include/xtensor/io/xcsv.hpp b/include/xtensor/io/xcsv.hpp
index 080ccaf54..2fd347745 100644
--- a/include/xtensor/io/xcsv.hpp
+++ b/include/xtensor/io/xcsv.hpp
@@ -66,7 +66,7 @@ namespace xt
             }
 
             size_t last = cell.find_last_not_of(' ');
-            return cell.substr(first, last == std::string::npos ? cell.size() : last + 1);
+            return cell.substr(first, last == std::string::npos ? cell.size() : last - first + 1);
         }
 
         template <>
@@ -93,6 +93,18 @@ namespace xt
             return std::stoi(cell);
         }
 
+        template <>
+        inline signed char lexical_cast<signed char>(const std::string& cell)
+        {
+            return static_cast<signed char>(std::stoi(cell));
+        }
+
+        template <>
+        inline unsigned char lexical_cast<unsigned char>(const std::string& cell)
+        {
+            return static_cast<unsigned char>(std::stoul(cell));
+        }
+
         template <>
         inline long lexical_cast<long>(const std::string& cell)
         {

From b6d8b7ddda3c7cb3fd0d962e3a0c77cb828d896a Mon Sep 17 00:00:00 2001
From: Alexis Placet <alexis.placet.dev@pm.me>
Date: Wed, 10 Jun 2026 17:05:17 +0200
Subject: [PATCH 2/4] Use namespace runner

---
 .github/workflows/codspeed.yml | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
index 9e2c5999c..752c6045d 100644
--- a/.github/workflows/codspeed.yml
+++ b/.github/workflows/codspeed.yml
@@ -2,11 +2,12 @@ name: CodSpeed
 
 on:
   push:
-    branches: [master]
-  pull_request:
-  # Allow CodSpeed to trigger backtest performance analysis
+    branches: [ master ]
+  pull_request: # Allow CodSpeed to trigger backtest performance analysis
+
   workflow_dispatch:
 
+
 permissions:
   contents: read
   id-token: write
@@ -22,7 +23,7 @@ defaults:
 jobs:
   benchmarks:
     name: Run benchmarks
-    runs-on: ubuntu-latest
+    runs-on: namespace-profile-benchmark
     steps:
     - name: Checkout code
       uses: actions/checkout@v6

From 2e17fcf29b6f945da08546294d207ab71497bcd9 Mon Sep 17 00:00:00 2001
From: Alexis Placet <alexis.placet.dev@pm.me>
Date: Wed, 10 Jun 2026 17:43:04 +0200
Subject: [PATCH 3/4] try privileged

---
 .github/workflows/codspeed.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
index 752c6045d..988cdad06 100644
--- a/.github/workflows/codspeed.yml
+++ b/.github/workflows/codspeed.yml
@@ -23,7 +23,7 @@ defaults:
 jobs:
   benchmarks:
     name: Run benchmarks
-    runs-on: namespace-profile-benchmark
+    runs-on: namespace-profile-benchmark;container.privileged=true;container.host-pid-namespace=true
     steps:
     - name: Checkout code
       uses: actions/checkout@v6

From 25ccb3d8c3ed269034a59dbfb069be5391abd6b9 Mon Sep 17 00:00:00 2001
From: Alexis Placet <alexis.placet.dev@pm.me>
Date: Wed, 10 Jun 2026 18:01:03 +0200
Subject: [PATCH 4/4] formatting

---
 .github/workflows/codspeed.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
index 988cdad06..05d385180 100644
--- a/.github/workflows/codspeed.yml
+++ b/.github/workflows/codspeed.yml
@@ -2,7 +2,7 @@ name: CodSpeed
 
 on:
   push:
-    branches: [ master ]
+    branches: [master]
   pull_request: # Allow CodSpeed to trigger backtest performance analysis
 
   workflow_dispatch: