GHC HEAD: cannot bootstrap HEAD with HEAD
The first invocation of a freshly built inplace/bin/deriveConstants hangs when I am bootstrapping HEAD with HEAD.
Last proven good git revision: d25f3c07
Broken revision: 0dd61fe7
There are only a few revisions in between. Notably:
commit 8a506104d5b5b71d5640afc69c992e0af40f2213
Author: George Karachalias <george.karachalias@gmail.com>
Date: Thu Dec 3 12:57:19 2015 +0100
Major Overhaul of Pattern Match Checking (Fixes #595)
...Incidentally there are a few known performance regressions from that commit, so maybe the bootstrap process is bitten by it.
I am not sure whether deriveConstants really hangs or just takes ages to complete.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.11 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | high |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | george.karachalias@gmail.com |
| Operating system | |
| Architecture |