#2561 Unsigned char at location treated as 16bit

[Herbert Pötzl]

It seems that specifying a location with __at implicitely makes an unsigned char 16bit at least as far as the compiler is concerned.

sdcc -mpic14 -p16f1718 --use-non-free -Wl-C bug01.c

SDCC : mcs51/z80/z180/r2k/r3ka/gbz80/tlcs90/ds390/pic16/pic14/TININative/ds400/hc08/s08/stm8 3.6.0 #9615 (Linux)

[Herbert Pötzl]

The resulting assembler output.

[Tom Li]

I can no longer reproduce this bug from the current trunk.

The old buggy assembly output was:

;   .line   31; "bug01.c"   if (at0x220) {
    BANKSEL _at0x220
    MOVF    (_at0x220 + 0),W
    IORWF   (_at0x220 + 1),W
    BTFSC   STATUS,2
    GOTO    _00106_DS_

And now the new assembly output is:

;   .line   33; "bug01.c"   if (at0x220) {
    MOVLW   (_at0x220 + 0)
    BANKSEL r0x1001
    MOVWF   r0x1001
    MOVF    r0x1001,W
    BTFSC   STATUS,2
    GOTO    _00106_DS_

This bug should be closed.

[Benedikt Freisen]

But why can it no longer be reproduced?
Could this have been fixed by [r11427] ("Merge pic14 branch.") in 2019?