checker: panic with __global + fixed-size array + range loop in method

[fleximus]

Describe the bug

Checker crash triggered by the presence of __global in a file that also defines a struct with a fixed-size array and a method that loops for i in 0 .. buf_len to write into that array

Reproduction Steps

bug.v:

module main

const buf_len = 256

__global not_used_in_code_but_helps_triggering = u64(-1)

struct Buffer {
mut:
	data [256]u8
	pos  int
}

fn (mut buf Buffer) clear() {
	buf.pos = 0
	for i in 0 .. buf_len {
		buf.data[i] = 0
	}
}

Check with v -check bug.v

Expected Behavior

Properly report run without the crash - a normal diagnostic about globals requiring -enable-globals, or otherwise complete checking without a panic.

Current Behavior

V panic: table.sym: invalid type (typ=ast.Type(0x0 = 0) idx=0). Compiler bug. This should never happen. Please report the bug using `v bug file.v`.

 v hash: 2ce4090
    pid: 0x1b69c4
    tid: 0x1b69c4
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:22301: at builtin___v_panic: Backtrace
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:38675: by v__ast__default_table_panic_handler
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:38681: by v__ast__Table_panic
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:39398: by v__ast__Table_sym
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:11450: by v__checker__Checker_struct_init
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:59787: by v__checker__Checker_expr
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:1267: by v__checker__Checker_map_init
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:59390: by v__checker__Checker_expr
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:1267: by v__checker__Checker_map_init
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:59390: by v__checker__Checker_expr
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:58078: by v__checker__Checker_stmt
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:58761: by v__checker__Checker_stmts_ending_with_expression
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:58738: by v__checker__Checker_stmts
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:2224: by v__checker__Checker_fn_decl
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:58143: by v__checker__Checker_stmt
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:55832: by v__checker__Checker_check
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:55938: by v__checker__Checker_check_files
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:60083: by v__builder__Builder_middle_stages
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:60132: by v__builder__Builder_front_and_middle_stages
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:62691: by v__builder__cbuilder__gen_c
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:62663: by v__builder__cbuilder__build_c
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:62654: by v__builder__cbuilder__compile_c
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:62571: by v__builder__Builder_rebuild
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:61717: by v__builder__compile
/tmp/v_1000/v2.01KEPF1JHXSAKTA678XYJMXHBB.tmp.c:63083: by main__rebuild

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.5.0 2ce4090

Environment details (OS name and version, etc.)

V full version: V 0.5.0 9a73766.2ce4090
OS: Linux

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