[so] Tema1 - (Dez)alocarea memoriei

[Bogdan Sass]

    La rularea valgrind pe un program care foloseste parser-ul din tema, 
obtin urmatorul rezultat:

# valgrind ./parser/CUseParser
==29053== Memcheck, a memory error detector.
==29053== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==29053== Using LibVEX rev 1854, a library for dynamic binary translation.
==29053== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==29053== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation 
framework.
==29053== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==29053== For more details, rerun with: -v
==29053==
 > test
Command successfully read!
==29053==
==29053== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 17 from 1)
==29053== malloc/free: in use at exit: 4 bytes in 1 blocks.
==29053== malloc/free: 10 allocs, 9 frees, 180 bytes allocated.
==29053== For counts of detected errors, rerun with: -v
==29053== searching for pointers to 1 not-freed blocks.
==29053== checked 96,384 bytes.
==29053==
==29053== LEAK SUMMARY:
==29053==    definitely lost: 0 bytes in 0 blocks.
==29053==      possibly lost: 0 bytes in 0 blocks.
*==29053==    still reachable: 4 bytes in 1 blocks.*
==29053==         suppressed: 0 bytes in 0 blocks.
==29053== Rerun with --leak-check=full to see details of leaked memory.

    Din cate am reusit sa imi dau seama, este vorba de niste structuri 
yylex care raman alocate la terminare. Ce nu imi dau seama din ce citesc 
este daca acest lucru reprezinta sau nu o problema ("lost" inteleg ce 
inseamna, dar "still reachable"?).

    Poate cineva sa imi explice ce inseamna acest "still reachable", si 
daca este vorba de un memory leak sau doar de un comportament normal?

    Multumesc!

-- 
Bogdan Sass
CCAI,CCSP,JNCIA-ER,CCIE #22221 (RS)
Information Systems Security Professional
"Curiosity was framed - ignorance killed the cat"

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