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Robert Griesemer 3a9fcc45f6 go/types: fix type-checking of shift expressions
Completely rethought shift expression type checking.
Instead of attempting to type-check them eagerly, now
delay the checking of untyped constant lhs in non-
constant shifts until the final expression type
becomes clear. Once it is clear, update the respective
expression tree with the final (not untyped) type and
check respective shift lhs' where necessary.

This also cleans up another conundrum: How to report
the type of untyped constants as it changes from
untyped to typed. Now, Context.Expr is only called
for an expresion x once x has received its final
(not untyped) type (for constant initializers, the
final type may still be untyped).

With this CL all remaining std lib packages that
did not typecheck due to shift errors pass now.

TODO: There's a lot of residual stuff that needs
to be cleaned up but with this CL all tests pass
now.

R=adonovan, axwalk
CC=golang-dev
https://golang.org/cl/7381052
2013-02-28 15:27:52 -08:00
api api: update next.txt 2013-02-27 15:19:59 -08:00
doc doc: correct some minor HTML errors found by tidy 2013-02-28 13:32:36 -08:00
include build: clang support 2013-02-15 13:37:43 -08:00
lib cmd/godoc: add support for display Notes parsed by pkg/go/doc 2013-02-25 20:34:09 -08:00
misc misc/dist: handle previous installation 2013-02-28 16:09:48 +11:00
src go/types: fix type-checking of shift expressions 2013-02-28 15:27:52 -08:00
test cmd/gc: accept cases with same value but different types in switch. 2013-02-26 00:45:43 +01:00
.hgignore
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AUTHORS A+C: Tyler Bunnell (individual CLA) 2013-02-28 16:09:32 +11:00
CONTRIBUTORS C: add googler Matt Brown mdbrown@google.com 2013-02-28 10:06:38 -08:00
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