AssertionError when disabling vmprof #191

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1. plocharz-9livesdata commented on Feb 11, 2019

   

   plocharz-9livesdata

   on Feb 11, 2019

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   Bug was introduced between versions 0.4.3 and 0.4.12
2. timpalpant commented on Jul 9, 2019

   

   timpalpant

   on Jul 9, 2019

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   I have also seen this. Don't have an easy repro but willing to investigate if anyone has ideas

       vmprof.disable()
     File "vmprof/__init__.py", line 38, in disable
       l.read_all()
     File "vmprof/reader.py", line 294, in read_all
       assert not marker, (fileobj.tell(), repr(marker))
   AssertionError: (204679, "'y'")
   
3. timpalpant commented on Aug 7, 2019

   

   timpalpant

   on Aug 7, 2019

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   Here's an example where we hit it on Travis in test_line_profiling: https://ci.appveyor.com/project/antocuni/vmprof-python/builds/26541234/job/c2u3veh8ex8v8urv

   >               assert not marker, (fileobj.tell(), repr(marker))
   529E               AssertionError: (422, "b'\\x00'")
   
4. timpalpant commented on Aug 7, 2019

   

   timpalpant

   on Aug 7, 2019

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   I suspect something in bb40a68, since it introduced a substantially different implementation for writing out the code objects.
5. gerasimovalexander commented on Oct 27, 2022

   

   gerasimovalexander

   on Oct 27, 2022

   Last edited by gerasimovalexander

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   is this going any further? the issue is still forcing me to install version 0.4.2 and make dirty workarounds in _vmprof.enable arguments to keep it work with latest PyPy

       vmprof.disable()
     File "/home/lib/pypy3.9/site-packages/vmprof/__init__.py", line 38, in disable
       l.read_all()
     File "/home/lib/pypy3.9/site-packages/vmprof/reader.py", line 294, in read_all
       assert not marker, (fileobj.tell(), repr(marker))
   AssertionError: (7459042, "b'\\x00'")
   
6. mattip commented on Sep 14, 2026

   

   mattip

   on Sep 14, 2026

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   Is this still reproducible?