[fpc-devel] FPC trunk building lazarus trunk fails with compiler AV ?

[Yuriy Sydorov]

On 11.12.2021 22:31, Marco van de Voort via fpc-devel wrote:
> 
> FPC trunk building lazarus trunk fails with compiler AV ?
> 
> An old ghost seems to have resurfaced. I didn't build a development lazarus for a while (I used a stable one for work), 
> but at least 1-2 weeks I have this problem:
> 
> 
> (3104) Compiling postscriptcanvas.pas
> (3104) Compiling printers.pas
> (3104) Compiling postscriptunicode.pas
> c:\repo\lazarusgit\lcl\postscriptcanvas.pas(707,3) Warning: (6060) Case statement does not handle all possible cases
> c:\repo\lazarusgit\lcl\postscriptcanvas.pas(722,30) Error: (1026) Compilation raised exception internally
> Fatal: (1018) Compilation aborted
> An unhandled exception occurred at $00499477:
> EAccessViolation: Access violation
>    $00499477  GET_ALIAS,  line 1214 of rgobj.pas
>    $0049C655  INSTR_SPILL_REGISTER,  line 2834 of rgobj.pas
>    $0049BDE3  SPILL_REGISTERS,  line 2572 of rgobj.pas
>    $004987DF  DO_REGISTER_ALLOCATION,  line 659 of rgobj.pas
>    $0048935A  DO_REGISTER_ALLOCATION,  line 903 of cgobj.pas
>    $004E2659  GENERATE_CODE_TREE,  line 1616 of psub.pas
>    $004E450B  READ_PROC,  line 2840 of psub.pas
>    $004E49F9  READ_DECLARATIONS,  line 3072 of psub.pas
>    $0043D00A  COMPILE,  line 402 of parser.pas
>    $004D44AE  LOADPPU,  line 2276 of fppu.pas
>    $005AF153  LOADUNITS,  line 523 of pmodules.pas
>    $005AFFA8  PROC_UNIT,  line 983 of pmodules.pas
>    $0043D00A  COMPILE,  line 402 of parser.pas
>    $00418526  COMPILE,  line 288 of compiler.pas
> 
> Compiler AVs in postscript* units have happened before afaik.
> 
> Any pointers?

I've tried to reproduce the AV while building Lazarus on i386-win32 with -O2 and -O3 options, but it works for me.
What compiler options have you used to build Lazarus?

Yuriy.