• Alexander Vershilov's avatar
    Remove explicit recursion in retainer profiling (fixes #14758) · 6db7d11e
    Alexander Vershilov authored
    Retainer profiling contained a recursion that under
    certain circumstances could lead to the stack overflow
    in C code.
    
    The idea of the improvement is to keep an explicit stack for the
    object, more precise to reuse existing stack, but allow new type of
    objects to be stored there.
    
    There is no reliable reproducer that is not a big program
    but in some cases foldr (+) 0 [1..10000000] can work.
    
    Reviewers: bgamari, simonmar, erikd, osa1
    
    Reviewed By: bgamari, osa1
    
    Subscribers: osa1, rwbarton, carter
    
    GHC Trac Issues: #14758
    
    Differential Revision: https://phabricator.haskell.org/D5351
    
    (cherry picked from commit 5f1d949a)
    6db7d11e
RetainerProfile.c 71.7 KB