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Diffstat (limited to 'doc/posix-functions/towupper.texi')
| -rw-r--r-- | doc/posix-functions/towupper.texi | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/posix-functions/towupper.texi b/doc/posix-functions/towupper.texi index 902cf16e68..bd29eec9ad 100644 --- a/doc/posix-functions/towupper.texi +++ b/doc/posix-functions/towupper.texi @@ -23,6 +23,9 @@ Portability problems not fixed by Gnulib: @item On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and therefore cannot accommodate all Unicode characters. +However, the Gnulib function @code{c32toupper}, provided by Gnulib module +@code{c32toupper}, operates on 32-bit wide characters and therefore does not +have this limitation. @item This function returns wrong values even for the ASCII characters in a zh_CN.GB18030 locale on some platforms: |