memory allocation and freeing

05-25-2003, 02:52 AM

Greetings,

Okay, heres two structures
:

Code:

struct TEST
{
     char   *var1;
     DATA  *data; 
};

struct DATA
{
    char   *datavar;
};

lets say I allocate the memory and everything. When I get to the point that I need to free() it I have a questions.

lets say we have...

struct TEST test1;

if I free(test1); does it free *var1, and *data too? or do I need to seperately free them as well? also, if I were to... test1=NULL; will it NULL var1 and data too? or, again, do I need to do those seperatley?

Thanks, any help on these minor questions will be most appreciated, as well as any other insights.

-Jase

XSquared · 05-25-2003, 06:26 AM

If you allocate memory for any members explicitly, you need to free it, along with the struct itself.

05-25-2003, 02:52 AM	#1
Jase Guest Posts: n/a	memory allocation and freeing Greetings, Okay, heres two structures : Code: struct TEST { char var1; DATA data; }; struct DATA { char datavar; }; lets say I allocate the memory and everything. When I get to the point that I need to free() it I have a questions. lets say we have... struct TEST test1; if I free(test1); does it free var1, and *data too? or do I need to seperately free them as well? also, if I were to... test1=NULL; will it NULL var1 and data too? or, again, do I need to do those seperatley? Thanks, any help on these minor questions will be most appreciated, as well as any other insights. -Jase

05-25-2003, 06:26 AM	#2
XSquared C++ Developer Join Date: Jun 2002 Location: UWaterloo Posts: 2,718	If you allocate memory for any members explicitly, you need to free it, along with the struct itself. __________________ Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie
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