From 687cf3106304efecbd94fd0ae71af269921a737f Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sun, 11 Jan 2026 15:47:57 +0300
Subject: [PATCH] Check for mmap call failure

---
 libs/jit/source/executable.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libs/jit/source/executable.cpp b/libs/jit/source/executable.cpp
index 3e245d0..1366058 100644
--- a/libs/jit/source/executable.cpp
+++ b/libs/jit/source/executable.cpp
@@ -1,4 +1,3 @@
-#include <memory>
 #include <pslang/jit/executable.hpp>
 
 #include <stdexcept>
@@ -18,8 +17,10 @@ namespace pslang::jit
 	blob make_host_executable(std::vector<std::uint8_t> const & code)
 	{
 #if defined(__linux__) || defined(__APPLE__)
-auto size = code.size();
+		auto size = code.size();
 		auto ptr = (std::uint8_t *)mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+		if (ptr == MAP_FAILED)
+			throw std::system_error(errno, std::generic_category());
 		std::copy(code.begin(), code.end(), ptr);
 		if (mprotect(ptr, size, PROT_READ | PROT_EXEC) != 0)
 			throw std::system_error(errno, std::generic_category());