On Aug 18 18:24, Agner Fog wrote:
> On 18/08/2019 13.57, Corinna Vinschen wrote:
> > Nope, Cygwin uses the Windows loader.
>
> Then, how do you do the extra linking? What is producing the "Cygwin runtime
> failure" message when loading/linking a DLL fails?
>
> > If the medium model is wasteful
On 18/08/2019 13.57, Corinna Vinschen wrote:
Nope, Cygwin uses the Windows loader.
Then, how do you do the extra linking? What is producing the "Cygwin
runtime failure" message when loading/linking a DLL fails?
If the medium model is wasteful in clang, that's a clang
optimization problem,
On Aug 18 08:04, Agner Fog wrote:
> Thanks a lot for your help in clarifying this.
>
> When I complained here about the wasteful 64-bit addresses you said that it
> was an LLVM issue.
I never said anything like that. The issue is that your clang
linux->cygwin cross compiler uses the wrong model,
Thanks a lot for your help in clarifying this.
When I complained here about the wasteful 64-bit addresses you said that
it was an LLVM issue. When I complained to LLVM they said it was a
Cygwin issue, and that you were using the wrong memory model.
All this confusion is due to a terrible lack
Oe Aug 17 07:31, Agner Fog wrote:
> > So errno was a bad example but you can try accessing e.g. __ctype_ptr__,
> > __progname, optarg, h_errno, or use FE_DFL_ENV from another DLL, just
> > for kicks.
> __ctype_ptr__ is a function
>
> h_errno works like errno with an imported function
>
> FE_DFL_E
So errno was a bad example but you can try accessing e.g. __ctype_ptr__,
__progname, optarg, h_errno, or use FE_DFL_ENV from another DLL, just
for kicks.
__ctype_ptr__ is a function
h_errno works like errno with an imported function
FE_DFL_ENV is a macro
__progname and optarg are local variabl
Hey,
Just my 5 cents to this. As Corinna pointed out, is the case, that a
"small" memory model application works for you, no valid prove that
all application will work on such a model. Another thing, which
cygwin depends heavily on is the pseudo-relocation stuff. It is not
guaranteed that code
On Aug 16 12:38, Agner Fog wrote:
>
> On 16/08/2019 11.52, Corinna Vinschen wrote:
> > 2 GB. Think errno accessed from another DLL. Your application works only
> > by chance.
>
> Good example.
>
> errno appears to be a global variable for historical reasons, but errno is
> implemented as a macro
On 16/08/2019 11.52, Corinna Vinschen wrote:
2 GB. Think errno accessed from another DLL. Your application works
only by chance.
Good example.
errno appears to be a global variable for historical reasons, but errno
is implemented as a macro that translates to a call to the imported
functio
On Aug 16 11:27, Agner Fog wrote:
> Thanks for your replies.
>
> A Cygwin application with -mcmodel=small appears to work fine.
>
> As I explained, -mcmodel=small does something else when the target is
> Windows. It does not require addresses to be below 2GB, it only requires the
> distance betwe
Thanks for your replies.
A Cygwin application with -mcmodel=small appears to work fine.
As I explained, -mcmodel=small does something else when the target is
Windows. It does not require addresses to be below 2GB, it only requires
the distance between a code section and it's data section to be
On Aug 16 08:06, Agner Fog wrote:
> Cygwin Clang is using -mcmodel=medium as default for Win64, according to my
> tests, while the right model is -mcmodel=small
-mcmodel=small is *only* the right model if the target is native
Windows. If the target is a Cygwin application it *must* at least
be co
Hi, please don't start a new Subject: by replying on another thread. It fouls
up mail threading for folks trying to follow multiple threads. Just start a new
thread with your new Subject:. Thanks.
Agner Fog wrote:
Cygwin Clang is using -mcmodel=medium as default for Win64, according to my
t
Cygwin Clang is using -mcmodel=medium as default for Win64, according to
my tests, while the right model is -mcmodel=small
Linux Clang with --target=x86_64-pc-cygwin gives the small memory model.
I took this to the LLVM Bugzilla as you asked me to:
https://bugs.llvm.org/show_bug.cgi?id=42983
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