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Full Discussion: Using gdb to detect segmentation fault in sh?
Top Forums UNIX for Dummies Questions & Answers Using gdb to detect segmentation fault in sh? Post 302932591 by DGPickett on Thursday 22nd of January 2015 04:07:41 PM
Old 01-22-2015
Well, 'core' is a real file, somewhere, and it has to be produced (by allowing configuration) and properly pathed for gdb to open it. The dying process puts it in $PWD/core. Once gdb is up, 'where' will get you down to a subroutine. Of course, you need source and it helps if the compile options and lack of stripping make the crashing object easy to debug. Sometiems fate is cruel, and it only bombs if you compile it without symbols! There is also running it under truss/tusc/strace to get some idea of what calls preceded the crash.
 

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LEARN ABOUT CENTOS

nana

NANA(1)                                                       General Commands Manual                                                      NANA(1)

NAME

       nana - generates debugger commands from C and C++ source code

SYNOPSIS

       nana [cpp-flags] files...

DESCRIPTION

       Generates  gdb(1)  commands  from  the arguments which implement the assertion and logging operations specified by macros such as DI(3) and
       DL(3).  The output of nana(1) can then be sourced into gdb(1) to perform these operations.

       Note that you must provide any C preprocessor flags you are using to nana since these can change the code that is  generated  by  the  com-
       piler.

SEE ALSO

       nana-clg(1), nana(3), I(3), DI(3), L(3), DL(3), Q(3) and nana.info.

       The nana.info file is the primary documentation.

AUTHOR

       Phil Maker <pjm@gnu.org>

                                                                                                                                           NANA(1)
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