finaliser of a ForeignPtr called while references from unreachable threads exist
I believe that I've managed to distill a crash which has been driving me crazy for a few days into a short enough test case (22 lines) that it might be useful.
In short: the threaded RTS will call the finialiser of a ForeignPtr while an exception handler still holds a reference to it:
% ghc -make fptest.hs cbits.c -threaded
[1 of 1] Compiling Main ( fptest.hs, fptest.o )
Linking fptest ...
% ./fptest
New object getting created: 66f010
Finaliser getting called for 66f010
Use called for 66f010
I'm hoping that this is useful to someone who knows the RTS.
Cheers,
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.8.2 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Runtime System |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | Linux |
| Architecture | x86_64 (amd64) |