Re: tcc - first impression. Was: Baby X is bor nagain

On Tue, 2 Jul 2024 15:18:10 +0100
bart <bc@freeuk.com> wrote:

On 02/07/2024 14:27, Michael S wrote:

On Tue, 2 Jul 2024 12:22:53 +0100
bart <bc@freeuk.com> wrote: 

>
Both make use of msvcrt.dll. I don't consider it a dependency since
it has always been part of Windows. (I first starting using it in
1990s, from my other language, before I knew much about C, as it
had a simpler file API than Windows.)
>
Lots of other applications use it too. Including older gcc binaries
and applications compiled with those.
>
On Windows 11, probably 10 too, msvcrt.dll's printf routines
support %zu, and so does Tcc.
 

 
Not really.
DLL that supports newer feature has different name -
VCRUNTIME140.dll And choice of DLL version is not directly related
to the version of Windows. 

Well, both tcc and mcc (my product) import msvcrt, not that runtime
file, and printf/zu works.
 
You can test it directly using the program below if you like.
 
If you think that the OS craftily substitutues vcruntime140.dll in
place of msvcrt.dll, then copy "c:\windows\system32\msvcrt.dll" to
"fred.dll", to a folder where it can be found. Then change "msvcrt"
beflow to "fred".
 
If %zu it doesn't work, then maybe your copy is old.
 
---------------------------
#include <windows.h>
#include <stdlib.h>
 
int main(void) {
     int (*PRINTF)(const char*, ...);
     HINSTANCE libinst;
 
     libinst=LoadLibrary("msvcrt");
     if (libinst==NULL) exit(1);
 
     PRINTF=GetProcAddress(libinst, "printf");
     if (PRINTF==NULL) exit(1);
 
     PRINTF("sizeof void* = %zu\n", sizeof(void*));
}
---------------------------
 

I am not logged into Win10/11 right now, so tried on Ws2016 witch is
mostly the same as early Win10. It didn't work.
Then I went and tested on Ws2019 which is similar to midlife Windows 10.
It works.
I didn't [yet] try to mess with DLLs in system folder but I looked at
versions.
on Ws2016 - 7.0.14393.2457
on Ws2019 - 7.0.17763.475