在 2025-6-7 00:07, Kirill Makurin 写道:
I just tested return values of UCRT's wctob in "C" locale for input in range [128,255] and it seems to do
the same thing as btowc.
For other locales it does best-fit conversion (when it can't convert losslessly), this why I come up with
using 20127, so we w
Oh, you are right, it does sign-extend the result.
I see that declarations of `btowc` and `wctob` in wchar.h do not have `_CRTIMP`.
Does it mean they just need to be removed from import libraries?
It also seems my second patch is no longer needed.
- Kirill Makurin
_
Using range check will prevent best-fit conversion. I think it would be
preferrable in this case.
- Kirill Makurin
From: Kirill Makurin
Sent: Saturday, June 7, 2025 1:02 AM
To: LIU Hao ; mingw-w64-public
Subject: Re: [Mingw-w64-public] Inconsistent behavior of
Yes, there should be "<=".
I just tested return values of UCRT's wctob in "C" locale for input in range
[128,255] and it seems to do the same thing as btowc.
For other locales it does best-fit conversion (when it can't convert
losslessly), this why I come up with using 20127, so we would perfor
在 2025-6-6 20:31, Kirill Makurin 写道:
diff --git a/mingw-w64-crt/misc/btowc.c b/mingw-w64-crt/misc/btowc.c
index c8fbd8e74..e203bbc44 100644
--- a/mingw-w64-crt/misc/btowc.c
+++ b/mingw-w64-crt/misc/btowc.c
@@ -15,14 +15,18 @@ wint_t btowc (int c)
... ...
+ unsigned cp = ___lc_codepage_func();
+
I have updated my initial patch, if you're OK with it.
There is second patch which should add emulation of btowc and wctob for
msvcrt.dll. I have not tested it, sorry for that.
- Kirill Makurin
From: Kirill Makurin
Sent: Friday, June 6, 2025 6:47 PM
To: lh_mo...
I can update patch I initially attached to:
For btowc, check for value to be in range [0,255] instead of [0,127].
For wctob, remove range check and use code page 20127 (ASCII) for conversion
(so it matches CRT's best-fit behavior).
- Kirill Makurin
From: LIU H
See commit message.
I have a question. What do you think about adding .pc (pkg-config) file for
winpthreads?
There is also a problematic interaction between pthread_compat.h and autoconf's
AC_TYPE_PID_T. With MSVC, this check will fail and it will
```
#define pid_t ...
```
If pthread_compat.h
