🚀 go-pugleaf

In article <SHIN.92Aug29190422@sgtp.sgtp.apple.juice.or.jp>  
shin@sgtp.apple.juice.or.jp (Sugou Shinichirou) writes:
> Hello.
> 
> I don't know the way how to use 'malloc_error' function. Please refer to
> the UNIX manual 'malloc_error' about the detailed information.
> 
> Suppose I want to execute myMallocErr() instead of the default routine
> whenever memory allocation error happens.
> 
> void myMallocErr(int code)
> {
>         printf("error");
>         abort();
> }
> 
> (2) Link program with  '-lMallocDebug'. For example: If you are using IB,
>     define the following line within Makefile.preamble, and 'make debug'
>     will generate the malloc-check-routine active code.
> 
> 	OTHER_DEBUG_LIBS = -lMallocDebug
> 

I believe that linking MallocDebug will override your call you malloc_error.   
Try this without linking in MallocDebug
--
Michael Rutman			|	moose@svcdudes.com
Cubist				|	makes me a NeXT programmer
Software Ventures		|	maker of MicroPhone Pro
#include <std.disclaimer>	|	really offesive political statement

In article <1992Aug31.172521.847@svcdudes.com> moose@svcdudes.com writes:
   > I don't know the way how to use 'malloc_error' function. Please refer to
   > the UNIX manual 'malloc_error' about the detailed information.
   > 
   > Suppose I want to execute myMallocErr() instead of the default routine
   > whenever memory allocation error happens.
   > 
   > void myMallocErr(int code)
   > {
   >         printf("error");
   >         abort();
   > }
   > 
   > (2) Link program with  '-lMallocDebug'. For example: If you are using IB,
   >     define the following line within Makefile.preamble, and 'make debug'
   >     will generate the malloc-check-routine active code.
   > 
   > 	OTHER_DEBUG_LIBS = -lMallocDebug
   > 

   I believe that linking MallocDebug will override your call you malloc_error.   
   Try this without linking in MallocDebug

I thank you for your suggestion.

I tried, but it seems not to be invoked still yet. The following is a very
simple test program.

------tmp1.c----------------------------------------
#import <stdlib.h>
#import <stdio.h>

void myMallocErr(int code)
{
   fprintf(stderr, "malloc error");
}

main()
{
   char *p;

   malloc_debug(32);
   malloc_error(myMallocErr);

   p = malloc(10);
   free(p);
   free(p);    // should be error!!
   exit(0);
}
---------------------------------------------------
When I compile it without '-lMallocDebug':

        %shell cc -g tmp1.c -o tmp1

No malloc error is detected. Even if I comment out 'malloc_error()'
sentence, again, no malloc error is detected.(--> malloc check routine deactiveted?)

When I compile with '-lMallocDebug':

        %shell cc -g tmp1.c -o tmp1 -lMallocDebug

the default error-message-routine is called. Even if I comment out
'malloc_error()' sentence, the result is the same.

Therefore, I think '-lMallocDebug' library is necessary when I make malloc
routine active.

But still I don't know the way how to change error-message-routine.

Any suggestion is appreciated.

--
Shin'ichirou Sugou

shin@apple.juice.or.jp (NeXTmail acceptable)


				   

Dear sirs:

I've got e-mail from Mr.Jim McKelvey about 'malloc_error', and he says

(1) the integer value in malloc_debug() should be not 32 but 62.
(2) no MallocDebug library is needed.

I tested the program again, and confirmed that everythig goes well now.

Mr.Michael Rutman suggested the same thing as (2) in his posted article.

I thank you very much, Mr.Jim McKelvey and Mr.Michael Rutman.

--
Shin'ichirou Sugou

shin@apple.juice.or.jp (NeXTmail acceptable)