Am Fr., 19. Nov. 2021 um 01:09 Uhr schrieb Ben Gamari <b...@smart-cactus.org >:
> Artem Pelenitsyn <a.pelenit...@gmail.com> writes: > > > Another question would be where do I read about Haskell-native stack > > unwinder. The issue and MR Ben referenced have descriptions, but the MR > > didn't touch anything inside `docs` which is a bit scary. Are there any > > good recourses to dive into it besides the source code in the MR? > > > Indeed the user's guide documentation surrounding info table provenance > should be updated to note this new capability. > Hey Ben, Hey Artem, Hey all, Thanks for bringing this up! I'll add some documentation to the user's guide and will likely write a blog post covering the "material" from notes in a more approachable way. Two details to note regarding the IPE based backtrace mechanism: - It's based on return frames on the STG stack. So, it doesn't work for trivial programs. A return frame is produced when the scrutinee of a case expression is evaluated. The test [1] shows a working example. - To get backtraces containing references in libraries, those have to be compiled with `-finfo-table-map`, too. Now that I've got the attention of many GHC-Devs: A big Thank-You! goes to Ben and Matthew that were always reachable and always very helpful during the whole development process of this feature! Best regards, Sven [1] - https://gitlab.haskell.org/ghc/ghc/-/blob/aed98ddaf72cc38fb570d8415cac5de9d8888818/testsuite/tests/rts/decodeMyStack.hs
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