From 5e656603a514adb783b21d295b0e58d20ea380f2 Mon Sep 17 00:00:00 2001
From: Christoffer Lerno <christoffer@aegik.com>
Date: Wed, 4 Feb 2026 14:27:52 +0100
Subject: [PATCH] - Remove dependency on temp allocator in File.open.

---
 lib/std/io/os/file_libc.c3 | 20 ++++++++++----------
 releasenotes.md            |  1 +
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/lib/std/io/os/file_libc.c3 b/lib/std/io/os/file_libc.c3
index 49f612add..49855ae24 100644
--- a/lib/std/io/os/file_libc.c3
+++ b/lib/std/io/os/file_libc.c3
@@ -5,22 +5,22 @@ import libc;
  @require mode.len > 0
  @require filename.len > 0
 *>
-fn void*? native_fopen(String filename, String mode) @inline => @pool()
+fn void*? native_fopen(String filename, String mode) @inline => @stack_mem(256; Allocator smem)
 {
 	$if env::WIN32:
-		void* file = libc::_wfopen(filename.to_temp_wstring(), mode.to_temp_wstring())!;
+		void* file = libc::_wfopen(filename.to_wstring(smem), mode.to_wstring(smem))!;
 	$else
-		void* file = libc::fopen(filename.zstr_tcopy(), mode.zstr_tcopy());
+		void* file = libc::fopen(filename.zstr_copy(smem), mode.zstr_copy(smem));
 	$endif
-		return file ?: file_open_errno()~;
+	return file ?: file_open_errno()~;
 }
 
-fn void? native_remove(String filename) => @pool()
+fn void? native_remove(String filename) => @stack_mem(256; Allocator smem)
 {
 	$if env::WIN32:
-		CInt result = libc::_wremove(filename.to_temp_wstring())!;
+		CInt result = libc::_wremove(filename.to_wstring(smem))!;
 	$else
-		CInt result = libc::remove(filename.zstr_tcopy());
+		CInt result = libc::remove(filename.zstr_copy(smem));
 	$endif
 	if (result)
 	{
@@ -39,12 +39,12 @@ fn void? native_remove(String filename) => @pool()
  @require mode.len > 0
  @require filename.len > 0
 *>
-fn void*? native_freopen(void* file, String filename, String mode) @inline => @pool()
+fn void*? native_freopen(void* file, String filename, String mode) @inline  => @stack_mem(256; Allocator smem)
 {
 	$if env::WIN32:
-		file = libc::_wfreopen(filename.to_temp_wstring(), mode.to_temp_wstring(), file)!;
+		file = libc::_wfreopen(filename.to_wstring(smem), mode.to_wstring(smem), file)!;
 	$else
-		file = libc::freopen(filename.zstr_tcopy(), mode.zstr_tcopy(), file);
+		file = libc::freopen(filename.zstr_copy(smem), mode.zstr_copy(smem), file);
 	$endif
 		return file ?: file_open_errno()~;
 }
diff --git a/releasenotes.md b/releasenotes.md
index 4b8ea5079..5d76b981c 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -8,6 +8,7 @@
 ### Stdlib changes
 - Summarize sort macros as generic function wrappers to reduce the amount of generated code. #2831
 - Remove dependency on temp allocator in String.join.
+- Remove dependency on temp allocator in File.open.
 
 ### Fixes
 - Add error message if directory with output file name already exists