Varargs issue with LDC

[Don Allen]

On Wednesday, 31 January 2024 at 20:01:51 UTC, Steven 
Schveighoffer wrote:
> On Wednesday, 31 January 2024 at 18:11:43 UTC, Johan wrote:
>>
>> Did you check that the D type of `g_type_string/boolean` 
>> matches the size of the type of the C constants? (`GType` 
>> which is `unsigned long` in C, 
>> https://codebrowser.dev/gtk/gtk/subprojects/glib/gobject/gtype.h.html#383)
>
>
> gtkd project uses `size_t`
>
> https://github.com/gtkd-developers/GtkD/blob/17d7dc25e1adc9b86aff381b950f21706118ebeb/generated/gtkd/gobject/c/types.d#L51
>
> -Steve

The D type of g_type_xxxxx was the answer. My hack had defined it 
as uint, should be ulong. So the arguments on the stack were not 
what the C code was expecting.

Now I wonder why my code worked with dmd.

My most cpu-intensive application, the report generator, is about 
9% faster compiled with ldc than dmd, both in release mode.

Thanks to everyone who replied and especially Johan, who asked 
the question that led me to the answer.