[clang] [Clang][CodeGen] Emit load of GEP after EmitMemberExpr (PR #110487)

[Jan Hendrik Farr via cfe-commits]

Cydox wrote:

> I went ahead and used the `EmitPointerWithAlignment` for all (it worked without needing special casing). I'll look into doing this in Sema as a potential cleanup.

With that change now the compiler segfaults when compiling the example C file I posted above:


> ```c
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
> 
> struct variable {
>         int a;
>         int b;
>         int length;
>         short array[] __attribute__((counted_by(length)));
> };
> 
> struct bucket {
>         int a;
>         struct variable growable;
> //        struct variable *growable;
> //        int b;
> };
> 
> int main(int argc, char *argv[])
> {
>         struct bucket *p;
>         struct variable *v;
> 
>         p = malloc(sizeof(*p) + sizeof(*p->growable.array) * 32);
>         p->growable.length = 32;
> 
> 
> //        printf("%zu\n", __builtin_dynamic_object_size(v->array, 1));
> 
> //        p->growable = v;
>         printf("%zu\n", __builtin_dynamic_object_size(p->growable.array, 1));
> 
>         return 0;
> }
> ```



https://github.com/llvm/llvm-project/pull/110487