Add check for constness in constructor redirection

Add check for constness in constructor redirection

Const constructor can only redirect to another const constructor.

BUG=#27617
R=regis@google.com

Committed: https://github.com/dart-lang/sdk/commit/f73ea62c999f4ad1f4f42832e0fa97a37ed49235

[hausner, 2016-10-19 21:01:10]

Description was changed from

==========
Add check for constness in constructor redirection

Const constructor can only redirect to another const constructor.

BUG=#27617
==========

to

==========
Add check for constness in constructor redirection

Const constructor can only redirect to another const constructor.

BUG=#27617
==========

[hausner, 2016-10-19 21:01:11]

hausner@google.com changed reviewers:
+ regis@google.com

[regis, 2016-10-19 21:11:31]

LGTM, but how about a regression test?

[hausner, 2016-10-19 22:06:56]

Added test.

[regis, 2016-10-19 22:09:19]

LGTM

[hausner, 2016-10-19 22:15:09]

Description was changed from

==========
Add check for constness in constructor redirection

Const constructor can only redirect to another const constructor.

BUG=#27617
==========

to

==========
Add check for constness in constructor redirection

Const constructor can only redirect to another const constructor.

BUG=#27617
R=regis@google.com

Committed:
https://github.com/dart-lang/sdk/commit/f73ea62c999f4ad1f4f42832e0fa97a37ed49235
==========

[hausner, 2016-10-19 22:15:10]

Committed patchset #2 (id:20001) manually as
f73ea62c999f4ad1f4f42832e0fa97a37ed49235 (presubmit successful).