interpreter: teach source_strings_to_files about StructuredSources
@@ -2753,7 +2753,7 @@ Try setting b_lundef to false instead.'''.format(self.coredata.options[OptionKey
results.append(s)
elif isinstance(s, (build.GeneratedList, build.BuildTarget,
build.CustomTargetIndex, build.CustomTarget,
- build.ExtractedObjects)):
+ build.ExtractedObjects, build.StructuredSources)):
results.append(s)
else:
raise InterpreterException(f'Source item is {s!r} instead of '
