/prog/ - C Valgrind

Name: Anonymous 2012-01-01 20:54

How can this happen?

==2292== HEAP SUMMARY:
==2292== in use at exit: 0 bytes in 0 blocks
==2292== total heap usage: 11,384 allocs, 11,341 frees, 270,935,685 bytes allocated
==2292==
==2292== All heap blocks were freed -- no leaks are possible

More allocs than frees but no leaks?

Name: Anonymous 2012-01-01 21:02

This could be possible if the code does malloc(0) or if some allocations fail (return NULL) but Valgrind still reports them.

Name: Anonymous 2012-01-01 21:10

there are no malloc(0) so i guess it's the second one.. I'm in my ram limit, i guess its getting some NULLs.
Thank ya!

Name: Anonymous 2012-01-01 21:41

What about calling free() twice on pointers?
Not a bad bug, just a bug you never hear about.

Name: Anonymous 2012-01-01 21:57

BLAME GCC OPTIMIZATIONS

Name: Anonymous 2012-01-01 21:59

Why should we blame gcc optimizations?

Name: Anonymous 2012-01-01 22:02

>>6
It optimizes anyway any free calls near the end of a program since it knows it'll be returning to the OS anyway which will free any remaining memory

Name: Anonymous 2012-01-01 22:10

/G/ IS DOWN
GET IN HERE /G/ROS!!!

Name: Anonymous 2012-01-01 22:18

>> EVERYTHING IS DOWN, WHAT SHALL WE DO?

Name: Anonymous 2012-01-02 1:50

TEN GET

Name: Anonymous 2012-01-02 1:50

>>10
NICE TEN BUT CHECK MY DUBZ

Name: Anonymous 2012-01-02 2:47

Are there any calls to realloc?

Name: Anonymous 2012-01-02 8:05

>>12
I don't think it would matter.

Name: Anonymous 2012-01-02 8:20

>>13
Why not? It is in my understanding the realloc is likely to allocate but unlikely to call free, and only calls free after a successful allocation.

Name: Anonymous 2012-01-02 11:05

ALLOCATE MY ANUS

Name: Anonymous 2012-01-02 12:23

>>14
The word "free" is a loaded worded in C.

Name: Anonymous 2012-01-02 14:22

>>16
So then how do I overload it

Name: Anonymous 2012-01-02 14:28

>>17
You must use Haskell.

Name: Anonymous 2012-01-02 16:52

>>17

void my_free(void *);

#define free my_free

C Valgrind

1 Name: Anonymous 2012-01-01 20:54

2 Name: Anonymous 2012-01-01 21:02

3 Name: Anonymous 2012-01-01 21:10

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5 Name: Anonymous 2012-01-01 21:57

6 Name: Anonymous 2012-01-01 21:59

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9 Name: Anonymous 2012-01-01 22:18

10 Name: Anonymous 2012-01-02 1:50

11 Name: Anonymous 2012-01-02 1:50

12 Name: Anonymous 2012-01-02 2:47

13 Name: Anonymous 2012-01-02 8:05

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17 Name: Anonymous 2012-01-02 14:22

18 Name: Anonymous 2012-01-02 14:28

19 Name: Anonymous 2012-01-02 16:52

Name: Anonymous 2012-01-01 20:54

Name: Anonymous 2012-01-01 21:02

Name: Anonymous 2012-01-01 21:10

Name: Anonymous 2012-01-01 21:41

Name: Anonymous 2012-01-01 21:57

Name: Anonymous 2012-01-01 21:59

Name: Anonymous 2012-01-01 22:02

Name: Anonymous 2012-01-01 22:10

Name: Anonymous 2012-01-01 22:18

Name: Anonymous 2012-01-02 1:50

Name: Anonymous 2012-01-02 1:50

Name: Anonymous 2012-01-02 2:47

Name: Anonymous 2012-01-02 8:05

Name: Anonymous 2012-01-02 8:20

Name: Anonymous 2012-01-02 11:05

Name: Anonymous 2012-01-02 12:23

Name: Anonymous 2012-01-02 14:22

Name: Anonymous 2012-01-02 14:28

Name: Anonymous 2012-01-02 16:52