Empty parameter list in proc causes exception

[avelure]

This isn't valid code, but I assume it should handle it more gracefully.

library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;

entity test is
end entity test;

architecture rtl of test is
begin
  process(all)
  
    procedure test_func (
    ) is
    begin
    end procedure test_func ;
  begin
    wait;
  end process;
    
end architecture rtl;

$ nvc --std=08 -a test_proc_empty_param.vhd
** Error: unexpected ) while parsing interface declaration, expecting one of constant, signal, variable, file, identifier, type, function, procedure, pure, impure or package
    > C:\proj\public\minimal\test_proc_empty_param.vhd:13
    |
 13 |     ) is
    |     ^ this token was unexpected

*** Caught exception c0000005 (EXCEPTION_ACCESS_VIOLATION) [address=0000000000000008, ip=00007FF67AB30404] ***

[00007FF67AAF3320]
[00007FF67AAF36D9]
[00007FFC02C00B1C] UnhandledExceptionFilter+0x1ec
[00007FFC053596BD] RtlCopyMemory+0x2bbd
[00007FFC0533F667] _C_specific_handler+0x97
[00007FFC0535504F] _chkstk+0x12f
[00007FFC052CE866] RtlFindCharInUnicodeString+0xa96
[00007FFC0535403E] KiUserExceptionDispatcher+0x2e
[00007FF67AB30404]
[00007FF67AB027F3]
[00007FF67AB249FC]
[00007FF67AB3A0DA]
[00007FF67AAFBD27]
[00007FF67AAF9D4A]
[00007FF67AAF621C]
[00007FF67AB5DED0]
[00007FF67AAE5501]
[00007FF67AAE2A2B]
[00007FF67AAD1311]
[00007FF67AAD1366]
[00007FFC04DC257D] BaseThreadInitThunk+0x1d
[00007FFC0530AF28] RtlUserThreadStart+0x28

Please report this bug at https://github.com/nickg/nvc/issues