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-rw-r--r--doc/posix-functions/swprintf.texi6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/posix-functions/swprintf.texi b/doc/posix-functions/swprintf.texi
index cd20d0e702..fe36bc215a 100644
--- a/doc/posix-functions/swprintf.texi
+++ b/doc/posix-functions/swprintf.texi
@@ -36,6 +36,12 @@ accommodate all Unicode characters.
@item
On Windows, this function does not take a buffer size as second argument.
@item
+This function produces wrong values for the @samp{La} directive
+on some platforms:
+glibc 2.15,
+@c https://dev.haiku-os.org/ticket/18353
+Haiku.
+@item
This function does not support size specifiers as in C23 (@code{w8},
@code{w16}, @code{w32}, @code{w64}, @code{wf8}, @code{wf16}, @code{wf32},
@code{wf64}) on some platforms: