gc: new typechecking rules

* Code for assignment, conversions now mirrors spec.
* Changed some snprint -> smprint.
* Renamed runtime functions to separate
  interface conversions from type assertions:
  convT2I, assertI2T, etc.
* Correct checking of \U sequences.

Fixes issue 840.
Fixes issue 830.
Fixes issue 778.

R=ken2
CC=golang-dev
http://codereview.appspot.com/1303042

1 files changed, 0 insertions, 55 deletions

diff --git a/test/golden.out b/test/golden.out
index cda1ec412..1bed6599a 100644
--- a/test/golden.out
+++ b/test/golden.out
@@ -180,58 +180,3 @@ BUG: bug260 failed
 
 =========== bugs/bug274.go
 BUG: errchk: command succeeded unexpectedly
-
-=========== bugs/bug284.go
-BUG: errchk: bugs/bug284.go:33: missing expected error: 'cannot'
-errchk: bugs/bug284.go:36: missing expected error: 'cannot'
-errchk: bugs/bug284.go:37: missing expected error: 'cannot'
-errchk: bugs/bug284.go:38: missing expected error: 'cannot'
-errchk: bugs/bug284.go:56: missing expected error: 'cannot'
-errchk: bugs/bug284.go:59: missing expected error: 'cannot'
-errchk: bugs/bug284.go:60: missing expected error: 'cannot'
-errchk: bugs/bug284.go:61: missing expected error: 'cannot'
-errchk: bugs/bug284.go:71: missing expected error: 'cannot'
-errchk: bugs/bug284.go:74: missing expected error: 'cannot'
-errchk: bugs/bug284.go:75: missing expected error: 'cannot'
-errchk: bugs/bug284.go:76: missing expected error: 'cannot'
-errchk: bugs/bug284.go:96: missing expected error: 'cannot'
-errchk: bugs/bug284.go:99: missing expected error: 'cannot'
-errchk: bugs/bug284.go:101: missing expected error: 'cannot'
-errchk: bugs/bug284.go:111: missing expected error: 'cannot'
-errchk: bugs/bug284.go:114: missing expected error: 'cannot'
-errchk: bugs/bug284.go:115: missing expected error: 'cannot'
-errchk: bugs/bug284.go:116: missing expected error: 'cannot'
-errchk: bugs/bug284.go:134: missing expected error: 'cannot|need type assertion'
-errchk: bugs/bug284.go:137: missing expected error: 'cannot|need type assertion'
-errchk: bugs/bug284.go:138: missing expected error: 'cannot|need type assertion'
-errchk: bugs/bug284.go:139: missing expected error: 'cannot|need type assertion'
-errchk: bugs/bug284.go:149: missing expected error: 'cannot'
-errchk: bugs/bug284.go:152: missing expected error: 'cannot'
-errchk: bugs/bug284.go:153: missing expected error: 'cannot'
-errchk: bugs/bug284.go:154: missing expected error: 'cannot'
-errchk: bugs/bug284.go:164: missing expected error: 'cannot'
-errchk: bugs/bug284.go:167: missing expected error: 'cannot'
-errchk: bugs/bug284.go:168: missing expected error: 'cannot'
-errchk: bugs/bug284.go:169: missing expected error: 'cannot'
-errchk: bugs/bug284.go:179: missing expected error: 'cannot'
-errchk: bugs/bug284.go:182: missing expected error: 'cannot'
-errchk: bugs/bug284.go:183: missing expected error: 'cannot'
-errchk: bugs/bug284.go:184: missing expected error: 'cannot'
-errchk: bugs/bug284.go: unmatched error messages:
-==================================================
-bugs/bug284.go:190: internal compiler error: typename ideal
-==================================================
-
-=========== bugs/bug285.go
-bugs/bug285.go:23: invalid map index false - need type B
-bugs/bug285.go:80: invalid map index z - need type interface { }
-bugs/bug285.go:83: invalid map index new(struct { x int }) - need type interface { }
-bugs/bug285.go:84: invalid map index p - need type interface { }
-bugs/bug285.go:85: invalid map index false - need type interface { }
-bugs/bug285.go:86: invalid map index 17 - need type interface { }
-bugs/bug285.go:87: invalid map index "foo" - need type interface { }
-bugs/bug285.go:93: invalid map index new(struct { x int }) - need type I1
-bugs/bug285.go:94: invalid map index false - need type I1
-bugs/bug285.go:95: invalid map index 17 - need type I1
-bugs/bug285.go:95: too many errors
-BUG: bug285