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bug in sprintf with int32 (version 3.212)

 
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Will Reeve



Joined: 30 Oct 2003
Posts: 209
Location: Norfolk, England

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bug in sprintf with int32 (version 3.212)
PostPosted: Mon Oct 18, 2004 8:00 am     Reply with quote
Can someone please confirm this:

The following lines of code don't appear to do what it should!
Code:
int32 sdisplay;
sdisplay = 10000; // manually set pdisplay variable for de-bug
sprintf(line1,"S%04lu",sdisplay);


For values of sdisplay 0 to 9999 the resultant string is correct (i.e. S0000 to S9999) however if sdisplay is 10000 then the string generated by sprintf is S10000 even though I have restricted it to 4 characters (it should be S0000)

The restriction doesn't appear to work for int32 length? Changing sdisplay to a int16 works OK.
Guest
PostPosted: Mon Oct 18, 2004 8:40 pm     Reply with quote
confirmed.

well, not a serious bug, might call it a CCS's non-ANSI feature ? Laughing

workaround: sprintf(line1,"S%04lu", (int16) sdisplay);
Will Reeve



Joined: 30 Oct 2003
Posts: 209
Location: Norfolk, England

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PostPosted: Tue Oct 19, 2004 2:29 am     Reply with quote
I ended up casting it into another int16 local as I have been programmed a long time ago (mainly a nasty little H8 complier to be honest) not to try and do �clever� things like a cast inside a function call but having just tried it, it works fine!

It�s always nice to fine a bug (human nature I guess!). There is a nasty one in the PCW IDE. I usually shoot off and do other things like check email etc. while the PIC is being programmed in the debugger; �attached� as it were. Yesterday I thought I would select �Help > Contents� to have a look at some help files� don�t do this while the IDE is downloading code to the PIC it crashes badly!

To be honest with you the current development systems by CCS is actually very stable and a joy to use. The support guys are good and always fix things quickly (even when it�s my fault!). I also code windows in Delphi and Borland could learn a few tricks from CCS IMHO.
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