On Mon, Nov 06, 2017 at 02:22:35PM +0000, Richard W.M. Jones wrote: > Since forever ... > > # string_of_bool true;; > - : string = "true" > # String.blit "urgh" 0 (string_of_bool true) 0 4;; > - : unit = () > # string_of_bool true;; > - : string = "urgh" > > Since OCaml 4.02 (in 2014) it has been possible to opt in to > ‘-safe-string’ to make strings immutable. You have to use the Bytes > type when you want mutable byte arrays. > > In OCaml 4.06, coming to Fedora Rawhide soon, this option will be the > default and any code which mutates strings will not compile: > > # String.blit "urgh" 0 (string_of_bool true) 0 4;; > Characters 21-42: > String.blit "urgh" 0 (string_of_bool true) 0 4;; > ^^^^^^^^^^^^^^^^^^^^^ > Error: This expression has type string but an expression was expected of type > bytes > > I think most upstream packages should be fixed by now, but if you need > help to fix a particular package then file a bug and CC me on it. As > a last resort you can enable mutable strings again using > ‘-unsafe-string’, but please try not to do that. This is now complete. The new compiler and all recompiled packages should appear in Rawhide in a day or two. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
