#10656: Ability to get stack traces from Haskell code -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Tarrasch Type: feature request | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: #3693 | Blocking: | Differential Revisions: Phab:D963 -------------------------------------+------------------------------------- Description changed by bgamari: Old description:

With the merge of Phab:D169 and Phab:D396 (included in GHC 7.10.1) GHC now has the ability to produce DWARF debugging information in compiled binaries.

It would be nice if Haskell programs could request stack backtraces from the RTS. Tarrasch has some work in this direction in Phab:D963 however there are a number of questions that remain outstanding,

* do we want to rely on an external library for parsing DWARF information? If so, how do we address portability concerns?

* What should the Haskell-land interfaces look like? Writing down some concrete use-cases would help here.

New description: With the merge of Phab:D169 and Phab:D396 (included in GHC 7.10.1, see #3693 for details) GHC now has the ability to produce DWARF debugging information in compiled binaries. It would be nice if Haskell programs could request stack backtraces from the RTS. Tarrasch has some work in this direction in Phab:D963 however there are a number of questions that remain outstanding, * do we want to rely on an external library for parsing DWARF information? If so, how do we address portability concerns? * What should the Haskell-land interfaces look like? Writing down some concrete use-cases would help here. -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10656#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#10656: Ability to get stack traces from Haskell code -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Tarrasch Type: feature request | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #3693 | Differential Rev(s): Phab:D963 -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"a6a3dabc9e6b1cfc2f4047d2d09efe634affb120/ghc" a6a3dabc/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="a6a3dabc9e6b1cfc2f4047d2d09efe634affb120" Libdw: Add libdw-based stack unwinding This adds basic support to the RTS for DWARF-assisted unwinding of the Haskell and C stack via libdw. This only adds the infrastructure; consumers of this functionality will be introduced in future diffs. Currently we are carrying the initial register collection code in Libdw.c but this will eventually make its way upstream to libdw. Test Plan: See future patches Reviewers: Tarrasch, scpmw, austin, simonmar Reviewed By: austin, simonmar Subscribers: simonmar, thomie, erikd Differential Revision: https://phabricator.haskell.org/D1196 GHC Trac Issues: #10656 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10656#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler