Code without MVar: "thread blocked indefinitely in an MVar operation"
The attached code produces the above message when compiled with optimisations on - even -O1 is enough. The same happens on both 32 and 64-bit architectures.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.4.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |