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-rw-r--r--libsha2_algorithm_output_size.34
1 files changed, 3 insertions, 1 deletions
diff --git a/libsha2_algorithm_output_size.3 b/libsha2_algorithm_output_size.3
index 49fd598..707c0d8 100644
--- a/libsha2_algorithm_output_size.3
+++ b/libsha2_algorithm_output_size.3
@@ -46,6 +46,8 @@ None.
.SH NOTES
None.
.SH BUGS
-None.
+Both GCC and Clang optimises out setting
+.I errno
+if using too high optimisation.
.SH SEE ALSO
.BR libsha2_state_output_size (3)