Crash related to external name #1062
Description
I came across a crash related to external names:
nvc_crash.vhd:
library ieee;
use ieee.std_logic_1164.all;
entity nvc_crash is
end entity nvc_crash;
architecture rtl of nvc_crash is
signal test_signal : std_logic;
begin
end architecture rtl;
nvc_crash_tb.vhd:
library ieee;
use ieee.std_logic_1164.all;
entity nvc_crash_tb is
generic(
ENABLE_EXTERNAL_NAME : boolean := true
);
end entity nvc_crash_tb;
architecture rtl of nvc_crash_tb is
signal test_signal : std_logic;
begin
g_external_name : if ENABLE_EXTERNAL_NAME generate
begin
test_signal <= <<signal .nvc_crash_tb.i_nvc_crash.test_signal : std_logic>>;
end generate g_external_name;
i_nvc_crash : entity work.nvc_crash;
end architecture rtl;
I get the crash report:
*** Caught exception c0000005 (EXCEPTION_ACCESS_VIOLATION) [address=0000000000000008, ip=00007FF68C4E423B] ***
[00007FF68C330600]
[00007FF68C3309B9]
[00007FFD31FCB21C] UnhandledExceptionFilter+0x1ec
[00007FFD347197FD] RtlCopyMemory+0x2bbd
[00007FFD346FF687] _C_specific_handler+0x97
[00007FFD3471517F] _chkstk+0x12f
[00007FFD3468E856] RtlFindCharInUnicodeString+0xa96
[00007FFD3471416E] KiUserExceptionDispatcher+0x2e
[00007FF68C4E423B] _nvc_get_object+0x156b
[00007FF68C4E2999] _nvc_do_exit+0x7b9
[00007FF68C4D29EB] vhpi_is_printable+0xaad6b
[00007FF68C40F4F7] std_env_get_assert_format+0x77c7
[00007FF68C3F7D55] nvc_current_delta+0x2805
[00007FF68C3F7C60] nvc_current_delta+0x2710
[00007FF68C3F7C60] nvc_current_delta+0x2710
[00007FF68C3F7395] nvc_current_delta+0x1e45
[00007FF68C3293F0]
[00007FF68C32783A]
[00007FF68C3287DA]
[00007FF68C3287DA]
[00007FF68C3223BB]
[00007FF68B154A63]
[00007FF68B154AC6]
[00007FFD32E5257D] BaseThreadInitThunk+0x1d
nvc 1.14.1 (1.14.1.r0.ge10a10e8) (Using LLVM 18.1.8) [x86_64-w64-mingw32]
Please report this bug at https://github.com/nickg/nvc/issues
It seems to only happen when the external name is within a generate and it's above the entity instantiation. If I either move the external name out from the generate or move the entity instantiation above the generate, it works fine.