doc/reference_manual.texi:
Give a reason why nonabstract instance declarations may not appear
in interface sections. To make this reason understandable, delay it
until we have discussed method definitions.
Add an example of an abstract instance declaration with a typeclass
constraint.
compiler/split_parse_tree_src.m:
Improve the wording along lines suggested by Julien.
tests/invalid_nodepend/instance_bug.err_exp:
Expect the updated wording.
doc/reference_manual.texi:
As above. The compiler enforced this requirement since April 2005,
but the manual was silent on the matter.
compiler/split_parse_tree_src.m:
When we detect an abstract instance declaration in the interface section,
extend the error message with a verbose-only mention of the usual fix.
tests/invalid_nodepend/Mercury.options:
Turn on verbose errors for this test case, which tests this error message.
tests/invalid_nodepend/instance_bug.err_exp:
Expect the new verbose component.
tests/invalid_onlydepend:
Move the one test case in tests/invalid for which we want to check
the error messages generated during the generation of dependencies
to this new test directory.
tests/invalid_nodepend:
Move all test cases in tests/invalid which get errors during the
generation of dependencies but for which we want to check the error
messages generated during normal compilation to this new test directory.
tests/invalid_nodepend/Mmakefile:
tests/invalid_nodepend/Mercury.options:
tests/invalid_onlydepend/Mmakefile:
tests/invalid_onlydepend/Mercury.options:
Versions of the same files in tests/invalid, but containing only
the entries relevant to the moved test cases.
tests/invalid/Mmakefile:
tests/invalid/Mercury.options:
Delete the entries that refer to the moved test cases.
tests/README:
Document the two new test directories.
tools/bootcheck:
Add invalid_onlydepend and invalid_nodepend to the list of
test directories.
