Sir Alex

Hello. I'm just tried to convert our application which uses MIME decoder from OverbyteIcsMimeDec.pas Under Ubuntu I'm got Access Violation (Segmentation fault/Invalid address) in function IcsMbToWc while decoding simple EML file. Problem reproduced by sample code (see below). Sysinfo: Delphi 11.3 (28.0.47991.2819) ICS: v8.70 release Ubunt: 22.04.2 LTS Test code: program Project1; {$APPTYPE CONSOLE} {$R *.res} uses System.SysUtils, OverbyteIcsUtils; var TestStr: RawByteString; ResStr: string; begin TestStr := 'This is an OpenPGP/MIME signed message (RFC 4880 and 3156)'; ResStr := AnsiToUnicode(TestStr, CP_UTF8); end. Stacktrace (Delphi does not show any stacktrace, so this trace from lldb debugger): * thread #1, name = 'Project1', stop reason = signal SIGSEGV: invalid address (fault address: 0x7ffffffff000) * frame #0: 0x00007ffff7fb16db UTF-16.so`gconv at loop.c:335:7 frame #1: 0x00007ffff7fb16d0 UTF-16.so`gconv(step=0x00000000007354d8, data=0x0000000000745d10, inptrp=0x00007fffffffe0a8, inend="", outbufstart=0x0000000000000000, irreversible=0x00007fffffffe170, do_flush=0, consume_incomplete=0) at skeleton.c:623:12 frame #2: 0x00007ffff7d991c2 libc.so.6`__gconv_transform_utf8_internal(step=0x0000000000735470, data=0x0000000000745ce0, inptrp=0x00007fffffffe2f8, inend="", outbufstart=0x0000000000000000, irreversible=0x00007fffffffe170, do_flush=0, consume_incomplete=0) at skeleton.c:675:17 frame #3: 0x00007ffff7d92a9f libc.so.6`__gconv(cd=0x0000000000745cd0, inbuf=0x00007fffffffe2f8, inbufend="", outbuf=0x00007fffffffe2f0, outbufend=<unavailable>, irreversible=0x00007fffffffe170) at gconv.c:77:13 frame #4: 0x00007ffff7d9238b libc.so.6`iconv(cd=<unavailable>, inbuf=0x00007fffffffe2f8, inbytesleft=0x00007fffffffe304, outbuf=0x00007fffffffe2f0, outbytesleft=0x00007fffffffe308) at iconv.c:51:16 frame #5: 0x00000000005a5dd2 Project1`Overbyteicsutils::IcsMbToWc(CodePage=0, Flags=0, MbStr=0x0000000000000000, MbStrLen=0, WStr=Summary Unavailable, WStrLen=0) at OverbyteIcsUtils.pas:2164:1

Ok, found a way to solve problem. In fact, System module already have crossplatform versions of functions WideCharToMultibyte and MultiByteToWideChar. So functions IcsWcToMb and IcsMbToWc can be easily replaced within: {* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *} function IcsWcToMb(CodePage: LongWord; Flags: Cardinal; WStr: PWideChar; WStrLen: Integer; MbStr: PAnsiChar; MbStrLen: Integer; DefaultChar: PAnsiChar; UsedDefaultChar: PLongBool): Integer; begin Result := LocaleCharsFromUnicode(CodePage, Flags, WStr, WStrLen, MbStr, MbStrLen, DefaultChar, PLongBool(UsedDefaultChar)); end; {* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *} function IcsMbToWc(CodePage: LongWord; Flags: Cardinal; MbStr: PAnsiChar; MbStrLen: Integer; WStr: PWideChar; WStrLen: Integer): Integer; begin Result := UnicodeFromLocaleChars(CodePage, Flags, MbStr, MbStrLen, WStr, WStrLen); end; P.S. Now, MIME decoder works fine

Thank you. It's successfully compiled, so I think v8.70 support Linux. :) Looks like USE_ICONV defined for all non windows platforms, so IcsMbToWc function uses libiconv library for conversion, but something going wrong inside iconv function call...