Several potential bugs of memory leak

[yuxuan He]

Ubuntu version: 18.04
bcc version:0.16.17

I found several bugs in bcc , would you help me to check if these bugs are true?thanks for your patience.
==============================================================================================================

step 1 :
  In file build/ar/ar.c(build is directory generated by configure) , function xmalloc line 2088 :
    Allocate memory to result

step 2 :
  In file build/ar/ar.c(build is directory generated by configure) , function xmalloc line 2090 :
    Select the false branch at this point (result==null is false)

step 3 :
  In file build/ar/ar.c(build is directory generated by configure) , function make_new_symdefs line 1756 :
    Function xmalloc executes and stores the return value to strings

step 4 :
  In file build/ar/ar.c(build is directory generated by configure) , function make_new_symdefs line 1760 :
    Select the true branch at this point (read(indesc,strings,strs_size)!=strs_size is true), the allocated memory is leaked

============================================================================================================

step 1 :
  In file build/bcc/bcc.c(build is directory generated by configure) , function xalloc line 1239 :
    Allocate memory to p

step 2 :
  In file build/bcc/bcc.c(build is directory generated by configure) , function xalloc line 1240 :
    Select the true branch at this point (p!=null is true)

step 3 :
  In file build/bcc/bcc.c(build is directory generated by configure) , function catstr line 284 :
    Function xalloc executes and returns

step 4 :
  In file build/bcc/bcc.c(build is directory generated by configure) , function run_unlink line 762 :
    Function catstr executes and stores the return value to p

step 5 :
  In file build/bcc/bcc.c(build is directory generated by configure) , function run_unlink line 763 :
    Select the true branch at this point (opt_v>1 is true)

step 6 :
  In file build/bcc/bcc.c(build is directory generated by configure) , function run_unlink line 765 :
    Select the true branch at this point (opt_v>2 is true)

step 7 :
  In file build/bcc/bcc.c(build is directory generated by configure) , function run_unlink line 753 :
    Select the false branch at this point (i<dyn_count is false), the allocated memory is leaked

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 1941973

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.