Am 28.02.2021 um 23:11 schrieb Mattias Gaertner via fpc-pascal:
Hi,
In FPC 3.2.0 the default "Default" value of a single/double property
has changed from $80000000 (fpc 3.0.4) to 0.
This breaks TWriter.
The $80000000 means the property has no default value.
Now FPC 3.2.0 no longer writes a property if the value is 0.0, no
matter what the stored function says.
For example:
property S: Single read FSingle write FSingle stored IsSStored;
FPC 3.0.4 TWriter does write S if S=0.0 and IsSStored returns true.
FPC 3.2.0 does not.
It was indeed the fix for Mantis #31985 (
https://bugs.freepascal.org/view.php?id=31985 ) that changed this and
the behavior of the RTTI is Delphi-compatible now.
If you want the default value to be $80000000 again you need to append
"nodefault" to the property.
I can't find this change in
https://wiki.lazarus.freepascal.org/User_Changes_3.2.0
@Ondrej: you had supplied the patch back then. Would you be able to
describe what exactly changed through your patch?
Regards,
Sven
_______________________________________________
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
