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malloc causing memory leaks?

ProgrammerDave · 2003-08-15T12:47:26

I''m using Paul Nettle''s memory manager and it says that a malloc in my program is causing this leak. But I don''t seem to see what''s wrong with it. I''ve checked the heap with _heapchk() but there''s nothing wrong with it. Here''s some code. Actually this is from game programming gems 1, the text code in the appendix. One line is causing all the problems. .... char *buffer; .... buffer = (char *)malloc(MAX_STR); Does anyone know why it would cause a memory leak? This is the manager output: ---------------------------------------------------------------------------------------------------------------------------------- | Memory leak report for: 08/13/2003 17:20:35 | ---------------------------------------------------------------------------------------------------------------------------------- 2 memory leaks found: Alloc. Addr Size Addr Size BreakOn BreakOn Number Reported Reported Actual Actual Unused Method Dealloc Realloc Allocated by ------ ---------- ---------- ---------- ---------- ---------- -------- ------- ------- --------------------------------------------------- 000002 0x02D51048 0x00000004 0x02D50048 0x00002004 0x00000000 new N N ??(00000)::?? 000004 0x02D55B98 0x00001000 0x02D54B98 0x00003000 0x00000000 malloc N N Text.cpp(00048)::??

General and Gameplay Programming Programming

Started by ProgrammerDave August 13, 2003 09:46 PM

10 comments, last by ProgrammerDave 20 years, 8 months ago

Mathematix

259

August 14, 2003 06:17 PM

quote:Original post by Agent1
That would just return the size of the type used to hold the MAX_STR constant, not the actual value in it.

-Agent1

That''s what I meant, Agent1.

Beginners and experts will find answers here.

Agent1

130

August 15, 2003 12:46 PM

quote:Original post by Mathematix
quote:Original post by Agent1
That would just return the size of the type used to hold the MAX_STR constant, not the actual value in it.

That's what I meant, Agent1.

I don't understand. It's wrong to use sizeof(MAX_STR) if you want to allocate characters to hold that many characters. What you should do is use:

malloc(sizeof(char) * MAX_STR);

-Agent1

[edited by - Agent1 on August 15, 2003 1:47:25 PM]

malloc causing memory leaks?

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