Dramatic slowdown with -O2 bytestream and list streams combined.
In a small testcase intended to filter log files from stdin, I found that using bytestreams and list streams in combination worked fine when compiled without optimization, but runtime performance slowed down by a factor of about 3600 when I compiled with -O2. Changing the import of Data.List.Stream to Data.List gets rid of the problem.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.8.4 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |