Memory functions not working.

[SeedyROM]

Upon compiling all of the memory allocation, etc. functions aren't defined. I'm not entirely sure why, but this is what I get in the console.

main.c(67):warning *** function 'memset' implicit declaration

main.c(78):warning *** function 'free' implicit declaration

main.c(82):warning *** function 'malloc' implicit declaration

Is this just a weird bug on my end?

[gheja]

Which compiler (and version) are you using? Also on what platform?

[SeedyROM]

I'm currently running it under Ubuntu 16.04, 64-bit AMD. Here's my version information for the compilers.

-> % lcc -v
lcc $Id: lcc.c,v 1.6 2001/10/28 18:38:13 michaelh Exp $
-> % sdcc -v
SDCC : gbz80/z80 2.3.1/gbdk-2.96a (Feb 14 2017) (UNIX)

I wrote a test program to showcase what I'm experiencing, maybe I'm just an idiot and I'm missing something huge.

#include <stdio.h>     // For debug.
#include <stdlib.h>    // Shouldn't malloc be included here?
#include <gb/gb.h>
#include <gb/malloc.h> // Doesn't throw an error finding the header file.
                       // But nothing gets defined.

// Stupid simple struct.
typedef struct _object {
  UBYTE  x,  y;
  BYTE  vx, vy;
} object;

void main() {
  object *obj = (object *)malloc(sizeof(object)); // Implicit delcaration?
  printf("%d", sizeof(obj));
}

If i compile it with lcc -v -c main.c this is the console output I get:

lcc $Id: lcc.c,v 1.6 2001/10/28 18:38:13 michaelh Exp $
/opt/gbdk/bin/sdcpp -Wall -lang-c++ -DSDCC=1 -DSDCC_PORT=gbz80 -DSDCC_PLAT=gb -DSDCC_MODEL_SMALL -DGB=1 -DGAMEBOY=1 -DINT_16_BITS -D__LCC__ -I/opt/gbdk/include main.c /tmp/lcc45600.i
/opt/gbdk/bin/sdcc -mgbz80 --noinvariant --noinduction --nostdinc --nostdlib --model-small --c1mode /tmp/lcc45600.i /tmp/lcc45601.asm
main.c(15):warning *** function 'malloc' implicit declaration
main.c(15):error   *** too many parameters 
main.c(15):warning *** function 'malloc' implicit declaration
main.c(16):error   *** code not generated for 'main' due to previous errors
lcc: fatal error in /opt/gbdk/bin/sdcc
rm /tmp/lcc45601.asm /tmp/lcc45600.i

Hope that's enough info.

[gheja]

Thanks for the example. Yes it seems that the malloc.h does not contain the declaration of malloc(), you might need to use gbdk-lib/libc/malloc.c.

I am not really familiar with the code but I could not find usage of malloc() in any of the example codes. In malloc.h there is a comment saying "Header for a simple implementation of malloc(). This library may currently be broken.".

There is a newer version of gbdk called gbdk-n but the malloc.h is the same.

[SeedyROM]

Yeah, I realized this after a dig through the source code not long after I sent this issue.

Thank you for getting back in touch though!