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dummzeuch

Registriert seit: 11. Aug 2012
Ort: Essen
1.565 Beiträge
 
Delphi 10.2 Tokyo Professional
 
#26

AW: Nach Update auf Delphi12 startet compiliertes Prog nicht mehr. Fehler bei LoadRes

  Alt 21. Jun 2024, 08:00
This line is cause :
https://github.com/zijianhuang/Commo...text.pas#L2454
Code:
  // replace Borlands LoadResString with gettext enabled version:
  HookLoadResString:=THook.Create (@system.LoadResString, @LoadResStringA);

The implementation of both LoadResStringA and LoadResStringW are not compatible system.LoadResString.
https://github.com/zijianhuang/Commo...s#L63C1-L67C66
Code:
// Unicode-enabled way to get resourcestrings, automatically translated
// Use like this: ws:=LoadResStringW(@NameOfResourceString);
function LoadResString(ResStringRec: PResStringRec): widestring;
function LoadResStringA(ResStringRec: PResStringRec): ansistring;
function LoadResStringW(ResStringRec: PResStringRec): widestring;
This override casting by hooking between string and widestring cause Delphi memory manager to corrupt memory at arbitrary places and luckily for you it happens at the stack at this stage !
The current code looks like this:

Delphi-Quellcode:
// Unicode-enabled way to get resourcestrings, automatically translated
// Use like this: ws:=LoadResStringW(@NameOfResourceString);
function LoadResString(ResStringRec: PResStringRec): widestring;
function LoadResStringW(ResStringRec: PResStringRec): UnicodeString;
function PLoadResString(const szMsgCtxt: MsgIdString; ResStringRec: PResStringRec): widestring;
function PLoadResStringW(const szMsgCtxt: MsgIdString; ResStringRec: PResStringRec): UnicodeString;
Delphi-Quellcode:
  // replace Borlands LoadResString with gettext enabled version:
  {$ifdef UNICODE}
  HookLoadResString:=THook.Create (@system.LoadResString, @LoadResStringW);
  {$else}
  HookLoadResString:=THook.Create (@system.LoadResString, @LoadResStringA);
  {$endif}
No idea whether this fixes the problem, but I use it for most of our internal tools at work with Delphi 2007 and 10.2 and haven't experienced any inexplicable AVs.
That code is from at least 2012 (when it was copied to SourceForge from now defunct Berlios, so any older history is lost). That version you found must be even older. But on the other hand, the dxgettext project dates back to the 1990ies where it of course started out as non-Unicode-aware.
Thomas Mueller
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