[option] or block corrupts pointer

[russo-2025]

Describe the bug

module main

struct Bar {
	name string
}
struct Foo333 {
	bars []Bar
}

fn (f Foo333) find() ?&Bar {
	bar1_2 := &f.bars[1] or { return none }
	bar1_4 := &f.bars[1]
	println("bar1_2 `${ptr_str(bar1_2)}`")
	println("bar1_4 `${ptr_str(bar1_4)}`") // ok
	
	//return &f.bars[1] //<-------- ok
	return &f.bars[1] or { return none } // wtf
}

fn main() {
	foo := Foo333{
		bars: [ Bar{name: "123"}, Bar{name: "aaa"}, Bar{name: "s34"} ]
	}

	println("o bar1 1 `${ptr_str(foo.bars[1])}`")
	println("o bar1 2 `${ptr_str(&foo.bars[1])}`")
	
	bar := foo.find() or { panic("not found") }
	println("o bar1 3 `${ptr_str(bar)}`")

	println(bar.name)
	
	bar2 := foo.find() or { panic("not found") }
	println(bar2.name)

	// v run file.v
	// o bar1 1 `1f1fd0`
	// o bar1 2 `1f1fd0`
	// bar1_2 `148fa48`
	// bar1_4 `1f1fd0`
	// o bar1 3 `148f898`
	// println(NIL)
	// bar1_2 `148fa48`
	// bar1_4 `1f1fd0`
	// aaa

	// v -prod run file.v
	// o bar1 1 `14d1fd0`
	// o bar1 2 `14d1fd0`
	// bar1_2 `145fa78`
	// bar1_4 `14d1fd0`
	// o bar1 3 `145fa48`
	// �
	// bar1_2 `145fa78`
	// bar1_4 `14d1fd0`
	// println(NIL)
}

Reproduction Steps

v run file.v
v -prod run file.v

Expected Behavior

print aaa

Current Behavior

Unpredictable behavior. The code may execute correctly, crash, freeze, or produce unexpected output.

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.8 77e4594

Environment details (OS name and version, etc.)

V full version: V 0.4.8 a132d97.77e4594
OS: windows, �������� Windows 10 Pro v19042 64-bit
Processor: 16 cpus, 64bit, little endian,

getwd: C:\Users\russo\Desktop\vbugs
vexe: M:\_dev\vlang\v.exe
vexe mtime: 2024-12-11 14:18:59

vroot: OK, value: M:\_dev\vlang
VMODULES: OK, value: C:\Users\russo\.vmodules
VTMP: OK, value: C:\Users\russo\AppData\Local\Temp\v_0

Git version: git version 2.46.0.windows.1
Git vroot status: weekly.2024.47-142-g77e45946
.git/config present: true

CC version: Error: 'cc' is not recognized as an internal or external command,
operable program or batch file.

emcc version: Error: 'emcc' is not recognized as an internal or external command,
operable program or batch file.

thirdparty/tcc: N/A

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_{Huly®: V_0.6-21570}