MOD_PURE
#define MOD_IGN (MOD_QUALIFIER | MOD_PURE)
if (ctype->ctype.modifiers & MOD_PURE)
{ "pure", NS_KEYWORD, MOD_PURE, .op = &attr_mod_op },
{"__pure__", NS_KEYWORD, MOD_PURE, .op = &attr_mod_op },
{"const", NS_KEYWORD, MOD_PURE, .op = &attr_mod_op },
{"__const", NS_KEYWORD, MOD_PURE, .op = &attr_mod_op },
{"__const__", NS_KEYWORD, MOD_PURE, .op = &attr_mod_op },
{MOD_PURE, "[pure]"},
if (!(insn->func->sym->ctype.modifiers & MOD_PURE))