#4037 dataseg option not respected when global variable initialised

[Under4Mhz]

When building the below code, the dataseg option is not respected when the the global variable is initialised with a value.
I was expecting that when the ram bank is set, all global variables will be in that bank, independent of whether it is initialised or not. If the current behaviour is correct, perhaps a warning would be appropriate. The reason for the bank difference was unclear to me without some investigation.

/// GPL 2.0 or later
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>

uint8_t test1 = 0;
uint8_t test2;


void do_something() {

    test1 = 3;
    test2 = 4;
}

void main() {

    do_something();

    printf( "%04X %04X", &test1, &test2 );
}

#ifdef __SDCC
__sfr __at 0xff sif;
int putchar( int c ) {

    sif = 'p';
    sif = c;

    return c;
}
#endif

sdcc -c  --constseg ROMBANK --codeseg ROMBANK --dataseg RAMBANK -mz80 --fverbose-asm ./ram_bank.c -o ram_bank.rel && sdcc -Wl-b_RAMBANK=0xC000  -Wl-b_ROMBANK=0x0000 -mz80 --fverbose-asm ./ram_bank.rel -o ram_bank.ihx  && ucsim_z80 -I if=outputs[0xff] ram_bank.ihx

Simulation started, PC=0x000000
8000 C000

Looking at the map, the test1 variable is at 8000 not at c000 as expected:

...
_INITIALIZED                        00008000    00000001 =           1. bytes (REL,CON)

         Value  Global                             Global Defined In Module
         -----  --------------------------------   ------------------------
     00008000  _test1                             ram_bank
...
_RAMBANK                            0000C000    00000001 =           1. bytes (REL,CON)

         Value  Global                             Global Defined In Module
         -----  --------------------------------   ------------------------
     0000C000  _test2                             ram_bank

If I remove the initialiser for test1

...
uint8_t test1; // no initialiser
uint8_t test2;


void do_something() {
...

The variables are now in the same bank:

r
Simulation started, PC=0x000000
C000 C001

_RAMBANK                            0000C000    00000002 =           2. bytes (REL,CON)

         Value  Global                             Global Defined In Module
         -----  --------------------------------   ------------------------
     0000C000  _test1                             ram_bank
     0000C001  _test2                             ram_bank

$ sdcc -v
SDCC : z80/sm83/ez80/z80n/mos6502/mos65c02 4.6.2 #16695 (Linux)