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What is the difference between _malloca and malloc?


By : Thiti Manee
Date : October 18 2020, 06:10 PM
this one helps. According to the reference documentation here, _malloca allocates memory on the stack rather than on the heap. The size of the allocated array is the same. So you did not actually fix any problem.
The warning says that the allocated array may be too short. Why you get this warning with malloc but not with _malloca I don't know. But if the compiler was right initially then the problem is still there.
code :


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is there a new equalivant of _malloca


By : joshums
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You can use _malloca with classes by allocating the memory (with _malloca) then constructing the class using placement new.
code :
void* stackMemory = _malloca(sizeof(MyClass));
if( stackMemory ) {
   MyClass* myClass = new(stackMemory) MyClass(args);
   myClass->~MyClass();
}

What is the difference between core.stdc.stdlib.malloc and core.memory.GC.malloc?


By : Juanita Brown
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , core.stdc.stdlib.malloc is plain C's malloc, so memory is not registred to GC. This means it will not be scanned and you must use C's free to free this memory. core.memory.GC.malloc is registred by GC and it will be scanned. You can use both of them. But if you use GC.disable even memory alloceted by core.memory.GC.malloc would not be freed until you enable GC back, or you call GC.collect.
Btw. if you want better control over memory allocation you should look at https://dlang.org/phobos/std_experimental_allocator.html

Difference in creating a struct using malloc and without malloc


By : user3647229
Date : March 29 2020, 07:55 AM
To fix this issue Could someone please explain to me the difference between creating a structure with and without malloc. When should malloc be used and when should the regular initialization be used? , If we assume both examples occur inside a function, then in:
code :
struct person p = {.name="apple"};
struct person* p_tr = malloc(sizeof(struct person));
p_tr->name = "apple";

when _malloca can not allocate memory on heap


By : ElBrontus
Date : March 29 2020, 07:55 AM
this will help Yey! I was right that _malloca returns NULL when can not allocate memory using malloc on heap. The problem is in call, that is stupid(((

What's the difference between malloc and not using malloc when creating pointers to nodes of a linked list?


By : Paco Gomez
Date : March 29 2020, 07:55 AM
it fixes the issue My linked list and nodes are defined as follows:
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