[fpc-devel] Warning: Unicode constant cast with potential data loss

Tomas Hajny XHajT03 at hajny.biz
Thu Sep 17 15:47:30 CEST 2020


On 2020-09-17 15:37, Martin via fpc-devel wrote:
> FPC 3.2.0
> 
> var
>   u,u2 : UTF8String;
> 
> begin
>   u := #$2267'x';
>   u2 := #$2267;  // warning
> 
> 
> Assigning a WideString to a Utf8String works without warning.
> 
> Assigning a WideChar (2nd line) to a Utf8String causes "Warning:
> Unicode constant cast with potential data loss"
> Apparently it is first converted to a char in the System codepage, and
> then to string.
> 
> Is that intended?

FWIW, this looks similar to my observation described in number 2 at the 
bottom of 
https://www.mail-archive.com/fpc-pascal@lists.freepascal.org/msg53421.html

Tomas


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