Sometimes when it reports "There is not enough ROM space..." is a stack space issue

[tsenyigming]

MikroC PRO for PIC still on sale but my compiller stoped update since 2019. But this time what I am reporting is old issue. Sometimes when I used almost all FLASH ROM space, the ROM space calculation are not accurate. See bellow screen shot:

before.png (241.24 KiB) Viewed 551 times

When Line 1211 to 1226 are commented, free ROM is 361 bytes. But when Line 1211 to 1226 are not comment. like bellow screen shot:

After.png (200.43 KiB) Viewed 551 times

The compiller reports: "...There is not enough ROM space..."
Yet I don't think bellow codes will take 361 bytes:
char BZ_on(){
LATA.B5=1; //RA5
return 1;
}

if(timer>20){
BZ_on();
}
else{
BZ_off();
}
I tried many times to solve it. Finally I succeed. I found this may be stack problem: too much of nesting subroutine calls.
So this is a bug: It's not exactly ROM space issue, but of the stack space issue that mikroC PRO for PIC compiller shall report.
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[filip]

Hi,

Can you please attach minimal project that demonstrates this issue ?

Regards,
Filip.

[tsenyigming]

Hi,

Can you please attach minimal project that demonstrates this issue ?

Regards,
Filip.

I have made small progress on this project so you will find the demonstrates like:

before.png (288.25 KiB) Viewed 423 times

When line 1443 is not comment, ROM space issue recurred:

After.png (254.49 KiB) Viewed 423 times

Line 1443 won't take 187 bytes. So, this is the problem.
Bellow is the project:

4G_RD_jig.rar

(737.27 KiB) Downloaded 27 times