Clearing Structures

[Darrel Taylor]

Hi David,

Here's an odd little problem I came across.

If a structure contains 3 or less (single byte) variables. It only clears the first byte of the structure. For instance...

Code: Select all

Structure Astruct
  A As Byte
  B As Byte
  C As Byte
End Structure

Dim STvar As Astruct

Clear(STvar)

End

Results with this ASM code for the Clear line

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I0_F1_000023 ; L#MK CLEAR(STVAR)
        CLRF M0_U24,0

But if you add one more variable

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Structure Astruct
  A As Byte
  B As Byte
  C As Byte
  D As Byte
End Structure

Then it clears everything

Code: Select all

I0_F1_000023 ; L#MK CLEAR(STVAR)
        CLRF M0_U32HHH,0
        CLRF M0_U32HH,0
        CLRF M0_U32H,0
        CLRF M0_U32,0

It holds true for Char's and ShortInt's as well. Although a single Word variable in the structure is cleared like normal.

Don't need an immediate fix, as the workaround is easy enough. Just something for your TO-DO list.

[David Barker]

You can download the latest version of the compiler (1.2.0.2) from

http://www.sfcompiler.co.uk/swordfish/d ... index.html

which should fix the problem for you.

[Darrel Taylor]

Yes!

That does indeed fix the problem.

Thanks again David for the great support.