ghdl with mcode backend crashes on if generate when .ghw output is enabled

[Jogt]

Description
GHDL with the mcode backend crashes while elab-running the MWE, if ghw output is enable with the --wave=wave.ghw option.
I could not observe the same crash without the --wave option, or with the llvm or gcc backends.

It also crashes with the --vcd=wave.vcd option set

Expected behaviour
No crash

How to reproduce?

MWE:

entity ent1 is
  generic (
    FOO : integer range 2 to 14 := 11
  );
end entity;

architecture structural of ent1 is
begin
  x: if FOO < 9 generate
  else generate
  end generate;
end architecture structural;

#!/bin/sh
ghdl -a --std=08 mwe.vhd
ghdl --elab-run --std=08 ent1 --wave=wave.ghw

Context
Please, provide the following information:

• OS: Arch-Linux
• Origin:
  • Package manager: aur: ghdl-mcode-git 5.0.0dev.r9345.g14b411c57-1
    This builds ghdl from source. Commit hash 14b411c

If a GHDL Bug occurred block is shown in the log, please paste it here:

******************** GHDL Bug occurred ***************************
Please report this bug on https://github.com/ghdl/ghdl/issues
GHDL release: 5.0.0-dev (4.0.0.r24.g14b411c57) [Dunoon edition]
Compiled with GNAT Version: 13.2.1 20230801
Target: x86_64-pc-linux-gnu
/home/kadel/workspace/ghdl_bug_report/
Command line:
ghdl --elab-run --std=08 ent1 --wave=wave.ghw
Exception CONSTRAINT_ERROR raised
Exception information:
raised CONSTRAINT_ERROR : grt-avhpi.adb:593 access check failed
******************************************************************

Additional context
ghdl --version

GHDL 5.0.0-dev (4.0.0.r24.g14b411c57) [Dunoon edition]
 Compiled with GNAT Version: 13.2.1 20230801
 static elaboration, mcode JIT code generator
Written by Tristan Gingold.

Copyright (C) 2003 - 2024 Tristan Gingold.
GHDL is free software, covered by the GNU General Public License.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

[tgingold]

I haven't checked, but I am pretty sure it works ok with --fst=.

[Jogt]

Yes, there is no crash if --fst export is used

[tgingold]

I am closing this ticket, I think the issue was already reported.

[Xiretza]

I can't find any related existing issues.

[tgingold]

Yep, sorry.