On Fri, 26 Mar 2021, Liu Hao wrote:
在 2021/3/26 上午4:56, Martin Storsjö 写道:
diff --git a/mingw-w64-headers/crt/stdio.h b/mingw-w64-headers/crt/stdio.h
(...)
int _flag;
int _file;
These fields have been changed to `long`s in UCRT (although there is no
difference in the representation),
Sure, maybe
and `_flag` has been renamed to the plural form `_flags`. How about
updating them as well?
Hmm.
The thing is that since this struct actually isn't available in the public
UCRT headers (where it's a pretty opaque struct containing only the first
member), I'm not sure what code we should try to be compatible with.
The only cases where one could have preexisting code that accesses
these fields, is for old mingw headers targeting msvcrt.dll, or older MSVC
versions targeting msvcrXX.dll (or statically linked).
As there's no code that could be using the new UCRT spelling using any
public headers, there's nothing we can try to remain compatible with in
that case, so we'd only be setting new predecent (i.e. if building
with mingw headers, and iff targeting UCRT, then access the field with
a different name).
I.e., I'm a bit hesitant about whether we should be doing this at all, or
if we should follow suit and make it a similar struct containing only the
first member instead?
// Martin
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