#15179: Unwinding info for stg_ap_v_info is wrong -------------------------------------+------------------------------------- Reporter: niteria | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.5 (Debugging) | Keywords: | Operating System: Linux Architecture: | Type of failure: Debugging Unknown/Multiple | information is incorrect Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `readelf --debug-dump=frames-interp` output for `stg_ap_v_info` is: {{{ 00000018 0000000000000034 00000000 FDE cie=00000000 pc=000000000000000f..000000000000021d LOC CFA rbp rsp ra 000000000000000f rbp+0 v+0 u c+0 0000000000000037 rbp+0 v+0 vexp c+0 0000000000000047 rbp+0 v+0 s c+0 }}} It's wrong because it unwinds to the same frame, see `cfa = rbp + 0`. I know the reason, I will put it in the comments below. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15179 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler