Memory corruption on Linux when csv.Reader is in a global variable

[jrfondren]

Context

The latest odin:

        Odin: dev-2022-10:662ed4a6
        OS:   Manjaro Linux, Linux 5.10.148-1-MANJARO
        CPU:  Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
        RAM:  15953 MiB

and the following program:

package main

import "core:fmt"
import "core:encoding/csv"

app: csv.Reader

main :: proc() {
	fmt.println(app)
}

Expected Behavior

The program should correctly print a zero'd csv.Reader, the same as it does when the app: csv.Reader variable is declared wtihin main.

Current Behavior

On my Linux machine, random output such as:

$ ./o220.bin |od -c
pppppppppppppppppppppppppppppp0000000   p   p   p   p   p   p   p   p   p   p   p   p   p   p   p   p
0000020

from such syscalls as:

$ strace -ewrite ./o220.bin 2>&1|head -5
write(6, "p\353A\0\0\0", 6)             = -1 EBADF (Bad file descriptor)
write(1, "p\353A\0\0\0\0\0\0\0\0\0\0\0\0\0@qC\0\0\0\0\0 \207\207\357/\177\0\0"..., 140728478333911) = -1 EFAULT (Bad address)
write(5, "p\353A\0\0", 5)               = -1 EBADF (Bad file descriptor)
write(3, "p\353A", 3)                   = -1 EBADF (Bad file descriptor)
write(1, "p\353A\0\0\0\0\0\0\0\0\0\0\0\0\0@qC\0\0\0\0\0 \207\207\357/\177\0\0"..., 140728478332615) = -1 EFAULT (Bad address)

On Windows, this is reported to not be an error. On another Linux machine, the reported behavior was a segfault from app.reader.comma = ',' after the print.