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A patch authored by martin to fix one of the big outstanding issues with
-Ycheck. The typer had a vision of the world which fell to pieces if
presented with a tree from after phase constructors. Now it is wiser:
perhaps a bit sadder as well, but every typer must face this day sooner
or later.
Also removed the various passing tests from test/checker-tests, but
still plenty of fascinating failures in there for anyone interested in
helping push to the finish line! No review.
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changes in Global and Typer to accomodate this, and renamed "Checkers"
to "ICodeCheckers" to make some less confusing space for the future
"SymbolCheckers". No review.
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build/pack/bin/scalac -d /tmp -Ycheck-debug -Ycheck:all \
src/compiler/scala/tools/nsc/Global.scala
That blows up in constructors as most files do, so also try it with
-Ycheck:icode to see the pretty icode output (for a little while anyway,
after which it will again blow up.)
Our work has only just begun! See test/checker-tests/fail*.scala for
11 examples of places where the checker cries foul. Many of them are
telling us about real issues and we should listen, but I will need help
to figure out which are legitimate and which should be eliminated by
altering the checkers.
This patch also hacks on some territory the checkers drew me into,
especially TypeKinds, where I figured anything which had been commented
out since 2005 was fair game.
(Optional) review by dragos. (The one place I know I could use a look is
in Checkers.scala, because I had to relax some checks and add at least
one newer opcode.)
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