Given the following program (an excerpt form a test program for a bugreport about the fpwidestring unit):
=== program test; {$codepage utf8} {$mode objfpc} {$h+} uses FpWideString; var WSource: WideString = 'source'; USource: UnicodeString = 'source'; WDest: WideString = '' ; UDest: UnicodeString = ''; ASource: AnsiString = 'source'; ADest: AnsiString = ''; P: array[0..99] of AnsiChar; begin with WideStringManager do begin writeln(1); Wide2AnsiMoveProc(pwidechar(WSource),RawByteString(ADest), CP_UTF8, Length(WSource)); writeln(2); Ansi2WideMoveProc(PChar(ASource), CP_UTF8, UDest, Length(ASource)); //<< test.lpr(24,53) Error: Can't take the address of constant expressions (caret behind UDest) end. ==== C:\Users\Bart\LazarusProjecten\bugs\Console\fpwidestring>fpc test.lpr Free Pascal Compiler version 3.3.1 [2022/10/11] for i386 Copyright (c) 1993-2022 by Florian Klaempfl and others Target OS: Win32 for i386 Compiling test.lpr test.lpr(24,53) Error: Can't take the address of constant expressions ... UDest is of the wrong type here, it compiles fine with WDest (WideString). I just don't understand the "Can't take the address of constant expressions" I would have expected something like "Call by var for arg no. 3 has to match exactly: Got "UnicodeString" expected "WideString"" -- Bart _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel