Why does this data segment value not change for global static variable in C++?

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C++

I tested these two examples in Code::Block with gcc compiler on Windows x64:

//Example 1
#include <stdio.h>
int global; // <== this is my question

int main(void)
{
    static int i=1000;

    return 0;
}

I compiled this demo with gcc in command line as:

C:\Demo_CPP\mem01>gcc main.c -o mem5-layout
C:\Demo_CPP\mem01>size mem5-layout.exe

I got this memory output:

text    data     bss     dec     hex filename
9708    2216    2440   14364    381c mem5-layout.exe

Now I made small change and intialize this var global=100 as below:

//Example 2
#include <stdio.h>
int global=100;  //<== it is initialized to 100

int main(void)
{
    static int i=1000;

    return 0;
}

now I compile and output this memory layout from command line:

C:\Demo_CPP\mem01>gcc main.c -o mem6-layout
C:\Demo_CPP\mem01>size mem6-layout.exe

I got this memory output:

C:\Demo_CPP\mem01>size mem6-layout.exe
  text    data     bss     dec     hex filename
  9708    2216    2432   14356    3814 mem6-layout.exe

compare these two memory layout, BSS value changed as expected: because var global is initialized to 100, so it is removed from BSS to DS segment,

But why data segment value(2216) does not change?

What I have tried:

from theory, this data segment value shall increase because int global is moved into data segment.

how to explain this data segment value not changing?