evm arch plugin raises assertion 'a && ap->name && ap->arch' failed (line 182)

[jmaselbas]

Environment

Wed Feb  8 11:30:05 CET 2023
radare2 5.8.3 30120 @ linux-x86-64 git.5.8.2-48-g5f5c55ff15
commit: 5f5c55ff158434291e3856cfd26ec72eb91177d1 build: 2023-02-07__11:00:42
Linux x86_64

Description

$ r2 -v
WARN: r_arch_add: assertion 'a && ap->name && ap->arch' failed (line 182)
$ rasm2 -L
WARN: r_arch_add: assertion 'a && ap->name && ap->arch' failed (line 182)

This is because the evm plugin doesn't fill the r_arch_plugin_evm struct when CS_API_MAJOR < 5: the plugin is a stub but still builtin.
see libr/arch/p/evm/plugin.c