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-rw-r--r--doc/gcrypt.texi6
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/gcrypt.texi b/doc/gcrypt.texi
index fd7680e2..4c1485c5 100644
--- a/doc/gcrypt.texi
+++ b/doc/gcrypt.texi
@@ -2589,8 +2589,10 @@ operations. @var{cmd} controls what is to be done. The return value is
@table @code
@item GCRYCTL_DISABLE_ALGO
Disable the algorithm given as an algorithm id in @var{buffer}.
-@var{buffer} must point to an @code{int} variable with the algorithm id
-and @var{buflen} must have the value @code{sizeof (int)}.
+@var{buffer} must point to an @code{int} variable with the algorithm
+id and @var{buflen} must have the value @code{sizeof (int)}. This
+fucntion is not thread safe and should thus be used before any other
+threads are started.
@end table
@end deftypefun