Re: What is your opinion about init_malloc?

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Sujet : Re: What is your opinion about init_malloc?
De : wyniijj5 (at) *nospam* gmail.com (wij)
Groupes : comp.lang.c
Date : 14. Mar 2025, 16:56:30
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <6255bb4153bcc571db879cf847ee3a110080c4fc.camel@gmail.com>
References : 1 2
User-Agent : Evolution 3.54.3 (3.54.3-1.fc41)
On Fri, 2025-03-14 at 16:49 +0100, Bonita Montero wrote:
Am 14.03.2025 um 15:24 schrieb Thiago Adams:
What is your opinion about init_malloc?
One problem it solves it to initialise a const objects on heap.
 
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
 
void * init_malloc(size_t size, void * src)
{
   void * p = malloc(size);
   if (p) {
      memcpy(p, src, size );
   }
   return p;
}
 
#define ALLOC(OBJ) ((typeof(OBJ)*) init_malloc(sizeof(OBJ), &(OBJ)))
 
////////// SAMPLE  //////////
 
struct Mail {
     const int id;
};
 
int main () {
     struct Mail* p0 = ALLOC((struct Mail){.id= 1});
 
     struct Mail* p1 = init_malloc(sizeof *p1, &(struct Mail){.id= 1});
 
     auto         p2 = ALLOC((struct Mail){.id= 1});
 
}
 
(I also posted on reddit)
 
 
C still seems to be a ridiculous language.
 

If it tries to exceed 'High level assembly', it could be ridiculous.
Same as C++, if it tries to be 'not-C'.


Date Sujet#  Auteur
14 Mar 25 * What is your opinion about init_malloc?14Thiago Adams
14 Mar 25 +* Re: What is your opinion about init_malloc?9Bonita Montero
14 Mar 25 i+* Re: What is your opinion about init_malloc?7wij
14 Mar 25 ii`* Re: What is your opinion about init_malloc?6Bonita Montero
14 Mar 25 ii +* Re: What is your opinion about init_malloc?2Thiago Adams
14 Mar 25 ii i`- Re: What is your opinion about init_malloc?1Bonita Montero
14 Mar 25 ii `* Re: What is your opinion about init_malloc?3wij
14 Mar 25 ii  +- Re: What is your opinion about init_malloc?1Richard Heathfield
14 Mar 25 ii  `- Re: What is your opinion about init_malloc?1Bonita Montero
15 Mar 25 i`- Bonita (Was: What is your opinion about init_malloc?)1Kenny McCormack
14 Mar 25 +* Re: What is your opinion about init_malloc?3Kaz Kylheku
15 Mar 25 i+- Re: What is your opinion about init_malloc?1Thiago Adams
15 Mar 25 i`- Re: What is your opinion about init_malloc?1Tim Rentsch
15 Mar 25 `- Re: What is your opinion about init_malloc?1Tim Rentsch

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