Unhandled Exception 0xC0000005

[russo-2025]

Describe the bug

C:\Users\russo\Desktop\vbugs>v run bug2.v
Unhandled Exception 0xC0000005
C:/Users/russo/AppData/Local/Temp/v_0/bug2.01J2MF248CMNTQFYY67VZKZBNB.tmp.c:6987: at print_backtrace_skipping_top_frames_tcc: Backtrace
C:/Users/russo/AppData/Local/Temp/v_0/bug2.01J2MF248CMNTQFYY67VZKZBNB.tmp.c:6954: by print_backtrace_skipping_top_frames
C:/Users/russo/AppData/Local/Temp/v_0/bug2.01J2MF248CMNTQFYY67VZKZBNB.tmp.c:7832: by unhandled_exception_handler
7ffdfd4881bc : by ???
7ffdfb73ffa6 : at ???: RUNTIME ERROR: invalid memory access
7ffdfd433403 : by ???
7ffdfae7b770 : by ???
4840ec8348571024 : by ???
Unhandled Exception 0xC0000005
C:/Users/russo/AppData/Local/Temp/v_0/bug2.01J2MF248CMNTQFYY67VZKZBNB.tmp.c:6987: at print_backtrace_skipping_top_frames_tcc: Backtrace
C:/Users/russo/AppData/Local/Temp/v_0/bug2.01J2MF248CMNTQFYY67VZKZBNB.tmp.c:6954: by print_backtrace_skipping_top_frames
C:/Users/russo/AppData/Local/Temp/v_0/bug2.01J2MF248CMNTQFYY67VZKZBNB.tmp.c:7832: by unhandled_exception_handler
7ffdfd4881bc : by ???

void main__foo(main__Expr1** expr) {
	println((*expr)->name);
}

void main__main(void) {
	main__Expr1 expr = ((main__Expr1){.name = _SLIT("123"),});
	main__foo((voidptr)&/*qq*/expr);
}

Reproduction Steps

v run bug2.v

module main

pub struct Expr1 {
	name string
}

fn  foo(mut expr &Expr1) { // <---- &
	println(expr.name)
}

fn main() {
	mut expr := Expr1{name: "123"}
	foo(mut expr)
}

Expected Behavior

human-readable error message(aka cannot use '&Expr1' as '&&Expr1' in argument 1 to 'foo')

Current Behavior

0xC0000005

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.6 7908957

Environment details (OS name and version, etc.)

V full version: V 0.4.6 58a8fc6.7908957
OS: windows, Windows 10 Pro v19042 64-bit
Processor: 16 cpus, 64bit, little endian,

getwd: M:_projects_skyrim\papyrus-compiler
vexe: M:_dev\vlang\v.exe
vexe mtime: 2024-07-12 16:28:32

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 2.45.1.windows.1
Git vroot status: weekly.2024.28-9-g79089578 (2 commit(s) behind V master)
.git/config present: true

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

thirdparty/tcc: N/A

Note

You can use the 👍 reaction to increase the issue's priority for developers.

Please note that only the 👍 reaction to the issue itself counts as a vote.
Other reactions and those to comments will not be taken into account.

[russo-2025]

similar bug #21856