C error printing the reference of a not integer variable.

[jorgeluismireles]

Describe the bug

We have a variable other than int, we create a reference and tried to print the reference.

Reproduction Steps

fn main() {
	s := 'Hello'
	p := &s
	println('${p}')
}

If above s is int or u8 there is no error and prints a number. If s is rune or f32 also there is a C error.

Expected Behavior

Get the number of the address (like with an integer).

Current Behavior

Running code...
Can't run code. The server returned an error:
/tmp/v_60000/../../../../../../box/code.v:4: warning: implicit declaration of function 'isnil'
/home/admin/v/thirdparty/tcc/lib/libgc.a: error: 'GC_noop1_ptr' defined twice
tcc: error: undefined symbol 'isnil'
builder error: 
==================
C error found. It should never happen, when compiling pure V code.
This is a V compiler bug, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .
Exited with error status 1
Please try again.

Possible Solution

Related with this issue #23460

Additional Information/Context

In REPL is harmless:

____    ____ 
 \   \  /   /  |  Welcome to the V REPL (for help with V itself, type  exit , then run  v help ).
  \   \/   /   |  Note: the REPL is highly experimental. For best V experience, use a text editor, 
   \      /    |  save your code in a  main.v  file and execute:  v run main.v 
    \    /     |  V 0.4.9 6f7cbd1 . Use  list  to see the accumulated program so far.
     \__/      |  Use Ctrl-C or  exit  to exit, or  help  to see other available commands.

>>> s := 'Hello'
>>> p := &s
>>> println('${p}')
&Hello
>>> 

V version

V 0.4.9 a20fff9

Environment details (OS name and version, etc.)

https://play.vlang.io/p/04a4c8aab1

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[huly-for-github]

Connected to Huly®: V_0.6-21891

[jorgeluismireles]

Commits linked here solved the C error problem by printing & followed by the value of the object referenced. I noticed printing the references with :x format we can get the numbers as with integers:

r, s, t, u, v := 1, 'Hello', `a`, 3.14, [1,2,3]
pr, ps, pt, pu, pv := &r, &s, &t, &u, &v
println('${pr} ${ps} ${pt} ${pu} ${pv}')
println('${pr:x} ${ps:x} ${pt:x} ${pu:x} ${pv:x}')

produces

1520ee921fe0 &Hello &a &3.14 &[1, 2, 3]
1520ee921fe0 1520ee922fe0 1520ee921fd0 1520ee921fc0 1520ee924fc0