Something is overwriting BSS.

[jacobly0]

This program misbehaves:

#include <stdio.h>
#include <string.h>
#include <tice.h>

int main() {
    static char bss_protector[0x1000];
    strcpy(&bss_protector[0x000], "first,");
    strcpy(&bss_protector[0x800], " second");
    os_SetCursorPos(0, 0);
    for (int i = 0; i < 11; ++i) {
        os_PutStrFull(&bss_protector[0x000]);
        os_PutStrFull(&bss_protector[0x800]);
        os_NewLine();
    }
    os_GetKey();
}

Full project

Note: Was also reproduced while only calling os_NewLine().

[jacobly0]

The only solution I can find is BSSHEAP_LOW ?= D052C6.

[jacobly0]

Nobody has suggested a better solution, so implementing the only suggestion.

[adriweb]

TODO at some point: update https://github.com/CE-Programming/toolchain/blob/master/docs/static/images/mem_layout.png from 0xD031F6 to 0xD052C6 (a 8400-byte reduction) -> Total BSS is now 60690 bytes.
And mention it in the changelog for the next release.

Edit: MateoC did it in 1a1bc4b