Thanks, That clears it.
Sergei > -----Original Message----- > From: mspgcc-users-ad...@lists.sourceforge.net > [mailto:mspgcc-users-ad...@lists.sourceforge.net] On Behalf > Of Dmitry K. > Sent: Tuesday, April 06, 2004 4:57 PM > To: mspgcc-users@lists.sourceforge.net > Subject: Re: [Mspgcc-users] [msp430] Anybody notice some of > these bugs? > > > as 7 Apr 2004 03:33 Sergei Sharonov wrote: > > > > ------------------- > > volatile short *pbuf, *plast; > > > > int main(void) > > { > > short buf[10]; > > pbuf = buf; > > plast = buf + 10; > > while(pbuf < plast); > > return 0; > > } > > > > void foo(void) /* called from interrupt */ > > { > > if(pbuf <= plast) *pbuf++ = 0; > > } > > > > ----------- > > Compiles into: > > > > while(pbuf < plast); > > 4054: 0f 9e cmp r14, r15 ; > > 4056: fe 2b jnc $-2 ;abs 0x4054 > > > > > 2. volatile var updates every time after 'volatile value' updated. > > > > See above. > > > > Compiler is right. > > Variables in buf[10] are volatiles in this example. > Try another place of word `volatile': > > short * volatile pbuf, * volatile plast; > > Now volatiles are pointers: > > .L2: > mov &pbuf, r14 > mov &plast, r15 > cmp r15, r14 > jlo .L2 > > Best regards. > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IBM Linux Tutorials > Free Linux tutorial presented by Daniel Robbins, President and CEO of > GenToo technologies. Learn everything from fundamentals to system > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > _______________________________________________ > Mspgcc-users mailing list > Mspgcc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mspgcc-users >
