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| author | Bruno Haible <bruno@clisp.org> | 2020-05-28 02:06:51 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2020-05-28 02:06:51 +0200 |
| commit | e0dc0ffc6f2f2a4826156d7451e1dc6e80e53243 (patch) | |
| tree | 6196a3f129d889d3104b15dc595f5f01f04eea37 /lib/ftruncate.c | |
| parent | 41b5ed4b01857881d356e15f86b3dd081fe3f6c8 (diff) | |
| download | gnulib-e0dc0ffc6f2f2a4826156d7451e1dc6e80e53243.tar.gz | |
Improve pattern for defining _WIN32_WINNT.
Newer versions of the Windows API may not only add, but also remove API
functions. Therefore, when the user is e.g. building for Windows 10, we
should not set _WIN32_WINNT to e.g. Windows 8, as this may enable the
use of APIs that were present in Windows 8 but removed in Windows 10.
Suggested by Steve Lhomme <robux4@ycbcr.xyz> in
<https://lists.gnu.org/archive/html/bug-gnulib/2020-05/msg00318.html>.
* lib/ftruncate.c (_WIN32_WINNT): Don't set to a smaller value.
* lib/sethostname.c (_WIN32_WINNT): Likewise.
* lib/stat-w32.c (_WIN32_WINNT): Likewise.
Diffstat (limited to 'lib/ftruncate.c')
| -rw-r--r-- | lib/ftruncate.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/ftruncate.c b/lib/ftruncate.c index a1856374e8..2514075e51 100644 --- a/lib/ftruncate.c +++ b/lib/ftruncate.c @@ -30,8 +30,10 @@ argument. So, define a 64-bit safe SetFileSize function ourselves. */ /* Ensure that <windows.h> declares GetFileSizeEx. */ -# undef _WIN32_WINNT -# define _WIN32_WINNT _WIN32_WINNT_WIN2K +# if !defined _WIN32_WINNT || (_WIN32_WINNT < _WIN32_WINNT_WIN2K) +# undef _WIN32_WINNT +# define _WIN32_WINNT _WIN32_WINNT_WIN2K +# endif /* Get declarations of the native Windows API functions. */ # define WIN32_LEAN_AND_MEAN |