From 399b8a7f6d731b4dd824fb9fbdb2814268181bc4 Mon Sep 17 00:00:00 2001
From: Michael Rieder <mail@mrieder.ch>
Date: Fri, 3 Jul 2026 17:14:03 +0200
Subject: [PATCH] Fix missing SSIZE_MAX declaration by including <climits>

src/files.cpp and src/async_io_epoll.cpp use SSIZE_MAX without
including <climits>, relying on it being pulled in transitively
by other headers. Newer glibc/libstdc++ (e.g. GCC 16 / glibc 2.43)
no longer expose SSIZE_MAX this way, breaking the build. Added
the explicit include to these files and to src/async_io_kqueue.cpp,
which has the same latent issue.
---
 src/async_io_epoll.cpp  | 1 +
 src/async_io_kqueue.cpp | 1 +
 src/files.cpp           | 1 +
 3 files changed, 3 insertions(+)

diff --git a/src/async_io_epoll.cpp b/src/async_io_epoll.cpp
index 7ed9493..df60584 100644
--- a/src/async_io_epoll.cpp
+++ b/src/async_io_epoll.cpp
@@ -8,6 +8,7 @@
 #include <array>
 #include <atomic>
 #include <cerrno>
+#include <climits>
 #include <condition_variable>
 #include <cstdint>
 #include <deque>
diff --git a/src/async_io_kqueue.cpp b/src/async_io_kqueue.cpp
index 95bc90e..123020d 100644
--- a/src/async_io_kqueue.cpp
+++ b/src/async_io_kqueue.cpp
@@ -8,6 +8,7 @@
 #include <array>
 #include <atomic>
 #include <cerrno>
+#include <climits>
 #include <condition_variable>
 #include <cstdint>
 #include <cstring>
diff --git a/src/files.cpp b/src/files.cpp
index 31047b9..c2f3d01 100644
--- a/src/files.cpp
+++ b/src/files.cpp
@@ -6,6 +6,7 @@
 
 #include <algorithm>
 #include <cerrno>
+#include <climits>
 #include <csignal>
 #include <cstddef>
 #include <cstdio>