• Simon Marlow's avatar
    Add -prof stack trace to assert · 6cb860a9
    Simon Marlow authored
    Summary:
    So that assertion failures have full call stack information attached
    when using `ghc -fexternal-interpreter -prof`.  Here's one I just
    collected by inserting a dummy assert in Happy:
    
    ```
    *** Exception: Assertion failed
    CallStack (from ImplicitParams):
      assert, called at ./First.lhs:37:11 in main:First
    CallStack (from -prof):
      First.mkFirst (First.lhs:37:11-27)
      First.mkFirst (First.lhs:37:11-93)
      Main.main2.runParserGen.first (Main.lhs:107:48-56)
      Main.main2.runParserGen.first (Main.lhs:107:27-57)
      Main.main2.runParserGen (Main.lhs:(96,9)-(276,9))
      Main.main2.runParserGen (Main.lhs:(90,9)-(276,10))
      Main.main2.runParserGen (Main.lhs:(86,9)-(276,10))
      Main.main2.runParserGen (Main.lhs:(85,9)-(276,10))
      Main.main2 (Main.lhs:74:20-43)
      Main.main2 (Main.lhs:(64,9)-(78,61))
      Main.main (Main.lhs:57:9-18)
    ```
    
    Test Plan: validate
    
    Reviewers: erikd, hvr, austin, bgamari
    
    Reviewed By: bgamari
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D1765
    
    GHC Trac Issues: #11047
    6cb860a9
Exception.hs 8.45 KB