How to enable core dump in my Linux C program

Question

My program is written in C    compiled with gcc  using -g3 -O0 -ggdb flags  When it crashes  I want to open its core dump  Does it create core dump file  or I need to do something to enable core dump creation  in the program itself  or on computer where it is executed  Where this file is created  and what is its name

User · Answer

By default many profiles are defaulted to 0 core file size because the average user doesn t know what to do with them   Try ulimit -c unlimited before running your program

User · Answer

You need to set ulimit -c  If you have 0 for this parameter a coredump file is not created   So do this  ulimit -c unlimited and check if everything is correct ulimit -a  The coredump file is created when an application has done for example something inappropriate  The name of the file on my system is core  lt process-pid-here gt

User · Answer

You can do it this way inside a program    include  lt sys resource h gt      core dumps may be disallowed by parent of this process  change that struct rlimit core limits  core limits rlim cur   core limits rlim max   RLIM INFINITY  setrlimit RLIMIT CORE   amp core limits

[c++] How to enable core dump in my Linux C++ program

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