nothunks

Examine values for unexpected thunks

Version on this page:	0.1.5
LTS Haskell 24.18:	0.3.1@rev:1
Stackage Nightly 2025-11-03:	0.3.1@rev:1
Latest on Hackage:	0.3.1@rev:1

See all snapshots nothunks appears in

Apache-2.0 licensed by IOG

Maintained by Marcin Szamotulski

This version can be pinned in stack with:nothunks-0.1.5@sha256:ebe6c82d2533851f10fc9c7a045cedbfc2add3c61e7a03ef47aa07c8220de09a,2721

Module documentation for 0.1.5

NoThunks
- NoThunks.Class

Depends on 8 packages(full list with versions):

base, bytestring, containers, ghc-heap, stm, text, time, vector

Long lived application data typically should not contain any thunks. This library can be used to examine values for unexpected thunks, which can then be used in assertions. This can be invaluable in avoiding memory leaks, or tracking down existing ones.

Changes

Revision history for nothunks

next version

0.1.5 – 2023-10-29

NoThunks ThreadId instance.
NoThunks Identity instance
Fix tests on ghc 9.8. Andreas Abel [email protected]
Tested with ghc 8.10 to 9.8.

0.1.4 – 2023-03-27

Made cabal flags manual.
Support ghc-9.2 to 9.6.
ThunkInfo is a newtype.

0.1.3 – 2021-06-28

Fix tests on ghc-9.0.1 Joe Hermaszewski [email protected]
Make bytestring, text and vector optional dependencies Bodigrim [email protected]

0.1.2 – 2020-12-03

Add IORef, MVar and TVar instances. Oleg Grenrus [email protected]

0.1.1.0 – 2020-09-29

Export Context and GWNoThunks
Fix typos in Haddocks
Improve bounds (and add upper bounds)

0.1.0.0 – 2020-09-09

Initial public release