Estimated hours taken: 4
Fix a limitation of the current nested module support:
ensure that we check for attempts to import inaccessible modules.
compiler/modules.m:
Check for attempts to import inaccessible modules
(modules whose parent has not been imported,
or for which there is no `include_module'
declaration in the parent's interface).
compiler/intermod.m:
Modify the way we import `.opt' files. The previous method
temporarily set the items field of the module_imports
structure to [], but check_module_accessibility relies
on the assumption that the items field contains the
items for all modules previously read in.
tests/invalid/Mmakefile:
tests/invalid/test_nested.m:
tests/invalid/test_nested.err_exp:
tests/invalid/parent.m:
tests/invalid/parent.private_child.m:
tests/invalid/parent.public_child.m:
tests/invalid/parent.undeclared_child.m:
tests/invalid/parent.undeclared_child.err_exp:
tests/invalid/parent2.m:
tests/invalid/parent2.child.m:
Add some tests for the above change.
doc/reference_manual.texi:
Update the "bugs and limitations" sub-section of the modules
chapter to reflect the new status quo.
