vlang
struct reference mutable function argument builder problem
Describe the bug
When the struct reference is a mutable function argument it outputs a builder error and a warning.
Reproduction Steps
@[heap]
struct Client {
mut:
next &Client
prev &Client
}
fn init_vm(mut head &Client) {
for c := head; c == unsafe{nil}; c = c.next {
}
}
fn main() {
mut head := &Client(unsafe{nil})
init_vm(mut head)
}
@[heap]
struct Client {
mut:
next &Client
prev &Client
}
fn init_vm(mut head &Client) {
for c := head; c; c = c.next {
}
}
fn main() {
mut head := &Client(unsafe{nil})
init_vm(mut head)
}
Expected Behavior
It not to output a builder error nor a warning.
Current Behavior
issue.v:11:39: warning: cannot assign a reference to a value (this will be an error soon) left=Client false right=Client true ptr=true
9 |
10 | fn init_vm(mut head &Client) {
11 | for c := head; c == unsafe{nil}; c = c.next {
| ^
12 |
13 | }
==================
/tmp/v_1000/issue.01HV8TCY7TQM1F0E8ZW6X6ETY7.tmp.c:13024: error: cannot convert 'struct main__Client' to 'unsigned long'
...
==================
(Use `v -cg` to print the entire error message)
builder error
Possible Solution
No response
Additional Information/Context
No response
V version
V 0.4.5 423c39c
Environment details (OS name and version, etc.)
V full version: V 0.4.5 294f7e4.423c39c OS: linux, Linux version 6.6.13-200.fc39.x86_64 (mockbuild@72f11b2996ed4699b0f705186172808f) (gcc (GCC) 13.2.1 20231205 (Red Hat 13.2.1-6), GNU ld version 2.40-13.fc39) #1 SMP PREEMPT_DYNAMIC Sat Jan 20 18:03:28 UTC 2024 Processor: 4 cpus, 64bit, little endian, Intel(R) Pentium(R) Gold 7505 @ 2.00GHz
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