KconfigParser.do_assignment() only exists to handle CONFIG_FOO=y/n
arguments from the command line; it is never invoked while parsing
a Kconfig source file. Because main() called it on a parser that
had never been through parse_file(), a failing CONFIG_ check would
raise a KconfigParserError whose __init__ and location() touch
fields of "self" that do not exist yet. The regex in main()
currently shields this, but it is fragile.
Move the prefix-stripping assignment to KconfigData as
do_cmdline_assignment(), simplify KconfigParser.parse() to accept
an existing KconfigData, and call it from main() so the parser is
only used for actual file parsing.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
e07ed5548e