Buffered Reader read_line() segfault when compiled with -prod about v HOT 4 CLOSED

#0 14:02:53 ᛋ master /v/oo❱v -cc gcc -prod run z.v
signal 11: segmentation fault
                                                        | 0x5555555673c1 | /space/v/oo/z(+0x133c1)
                                                        | 0x55555556a3e0 | /space/v/oo/z(+0x163e0)
                                                        | 0x55555556a718 | /space/v/oo/z(+0x16718)
                                                        | 0x555555556b94 | /space/v/oo/z(+0x2b94)
                                                        | 0x155555302083 | /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)
                                                        | 0x555555556c4e | /space/v/oo/z(+0x2c4e)
#139 14:03:05 ᛋ master /v/oo❱v -cflags -fno-inline-small-functions  -cc gcc -prod run z.v
#0 14:03:19 ᛋ master /v/oo❱

#0 14:07:25 ᛋ master /v/oo❱git diff
diff --git vlib/os/file.c.v vlib/os/file.c.v
index cb3d1e235..6108974fe 100644
--- vlib/os/file.c.v
+++ vlib/os/file.c.v
@@ -47,6 +47,7 @@ fn fix_windows_path(path string) string {
 }

 // open_file tries to open or create a file with custom flags and permissions.
+@[noinline]
 pub fn open_file(path string, mode string, options ...int) !File {
        mut flags := 0
        mut seek_to_end := false
#0 14:07:27 ᛋ master /v/oo❱
#0 14:07:56 ᛋ master /v/oo❱
#0 14:07:56 ᛋ master /v/oo❱v -cc gcc -prod run x.v
os.File{
    cfile: 5555555ba2a0
    fd: 3
    is_opened: true
}
module main

import os
import io

fn main() {
        mut file := os.open_file(@FILE, 'r')!
        println(file)
        mut buff_reader := io.new_buffered_reader(reader: file)
        for {
                a := buff_reader.read_line() or { break }
                println(a)
        }
        println('done')
}
done
#0 14:08:03 ᛋ master /v/oo❱git stash
Saved working directory and index state WIP on master: 6f4d9aecf x.json2: minor performance improvement, update benchmark recommendations (#20954)
#0 14:08:12 ᛋ master /v/oo❱v -cc gcc -prod run x.v
os.File{
    cfile: 0
    fd: 0
    is_opened: false
}
signal 11: segmentation fault
                                                        | 0x555555567471 | /space/v/oo/x(+0x13471)
                                                        | 0x555555569163 | /space/v/oo/x(+0x15163)
                                                        | 0x555555556b94 | /space/v/oo/x(+0x2b94)
                                                        | 0x155555302083 | /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)
                                                        | 0x555555556c4e | /space/v/oo/x(+0x2c4e)
#139 14:08:20 ᛋ master /v/oo❱