Update docs

2018-05-20 17:10:34 -07:00
parent 2196025dd1
commit 6966db1dab
2 changed files with 33 additions and 44 deletions
@@ -164,6 +164,10 @@ Utilities
 System errors
 -------------

+fmt does not use ``errno`` to communicate errors to the user, but it may call
+system functions which set ``errno``. Users should not make any assumptions about
+the value of ``errno`` being preserved by library functions.
+
 .. doxygenclass:: fmt::system_error
   :members: