[sdcc-devel] [ sdcc-Bugs-1305065 ] constant calculation problem

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Bugs item #1305065, was opened at 2005-09-26 20:11
Message generated for change (Settings changed) made by bernhardheld
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Category: C-Front End
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Josef Pavlik (jetset)
>Assigned to: Bernhard Held (bernhardheld)
Summary: constant calculation problem

Initial Comment:
hi all,
I found an problem with the following piece of code:

void xx(int x){}
main()
{
 xx((-100)*10L*200L/254); // makes bad code 
 xx((-100)*2000L/254); // this is right
}


the result is following:
;x.c:4: xx((-100)*10L*200L/254);
        mov     dptr,#0x00F4
        lcall   _xx
;x.c:5: xx((-100)*2000L/254);
        mov     dptr,#0xFCED
        ljmp    _xx


sdcc x.c

sdcc -v
SDCC : mcs51/gbz80/z80/avr/ds390/pic16/pic14/TININative/xa51/ds400/hc08 2.5.3 #1116 (Sep 26 2005) (UNIX)

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100599&aid=1305065&group_id=599