String Adress wrong (*solved*)

[LCD]

Strangely my proportional Print SUB from Tips section, with example, does not work anymore with the latest development version of ZXBC, because the address of text in b$ is returned incorrectly (in ROM).

Code:

DIM b$ AS STRING
b$="test"
PRINT PEEK(Uinteger,@b$)+2

It does not return the correct address and compiled program says "A Invalid argument" at the end.

Code:

DIM b$ AS STRING
dim adr as uinteger
b$="test"
adr=PEEK(Uinteger,@b$)+2
print adr

Does not change anything.

Code:

adr=@b$

comes with a "Undefined label '_test_b'." if used in SUBs

[boriel]

Strangely my proportional Print SUB from Tips section, with example, does not work anymore with the latest development version of ZXBC, because the address of text in b$ is returned incorrectly (in ROM).

Code:

DIM b$ AS STRING
b$="test"
PRINT PEEK(Uinteger,@b$)+2

It does not return the correct address and compiled program says "A Invalid argument" at the end.

Code:

DIM b$ AS STRING
dim adr as uinteger
b$="test"
adr=PEEK(Uinteger,@b$)+2
print adr

Does not change anything.

Code:

adr=@b$

comes with a "Undefined label '_test_b'." if used in SUBs

As expected this is due to the (@x + N) optimization. In fact, @b + 2 might be not constant since it's a mutable object (a string). This is something I have to study...

[LCD]

As expected this is due to the (@x + N) optimization. In fact, @b + 2 might be not constant since it's a mutable object (a string). This is something I have to study...

So maybe if it is a mutable object, you can add a function like AddressOf(b$) or similar? It would be less tragic if only POKE STRING adress,String$ and PEEK (STRING,adress[,length]) would work.

[boriel]

I have a question about your 1st example:
This code:

Code:

Print PEEK(Uinteger, @b)+2

is supposed to return the 1st string character?

Please, download again the new version (1.2.6-r1603f) from the Archive and try...

[LCD]

I have a question about your 1st example:
This code:

Code:

Print PEEK(Uinteger, @b)+2

is supposed to return the 1st string character?

Please, download again the new version (1.2.6-r1603f) from the Archive and try...

This should print the address of the memory where the b$ String is stored, without leading bytes. I suppose, the String is stored with size description in the front, and it is not zero-terminated. Proportional print needs the address of the string to be handed over. This is the only way it can be done as POKE STRING address,String does not work. *)
I downloaded the f-version and it works now as it should be. Thank you!

*) Okay, this is not exactly true:

Code:

propprint(0,0,3,1,@textaddress)

textaddress:
asm
  defs "Testtext"
end asm

woulw work somehow too.