[GitHub] [incubator-nuttx] patacongo commented on issue #3737: nxflat build and run-time errors

[GitBox <gi...@apache.org>]

patacongo commented on issue #3737:
URL: https://github.com/apache/incubator-nuttx/issues/3737#issuecomment-846457431


   > Do you have idea what the cause may be?
   
   No, it is impossible to interpret the hardfault dump without also having the ELF file with the addresses.  Without the ELF it is just meaningless numbers.  See https://cwiki.apache.org/confluence/display/NUTTX/Analyzing+Cortex-M+Hardfaults
   
   Because printf() uses buffered I/O we don't really know where it failed.  The last data buffered by printf() was lost.  There was probably output after "Calling mystruct->pf()" that we do not see.  It appears that the failure occurred when mystruct->pf() was called.  However, it is also likely that mystruct->pf() returned and the crash occurred when the test exited.  This happens often if the stack is too small.  We can't tell from this data.
   
   You will need to analyze the hardfault dump per the steps at the above link, and/or single step through the mystruct->pf() call, and/or add a lot more printf() WITH fflush() calls.
    


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

For queries about this service, please contact Infrastructure at:
users@infra.apache.org