Use HTTPS links where possible

1 files changed, 11 insertions, 11 deletions

diff --git a/compiler/rustc_graphviz/src/lib.rs b/compiler/rustc_graphviz/src/lib.rs
index db70beb5914..27390fd2e4d 100644
--- a/compiler/rustc_graphviz/src/lib.rs
+++ b/compiler/rustc_graphviz/src/lib.rs
@@ -1,11 +1,11 @@
-//! Generate files suitable for use with [Graphviz](http://www.graphviz.org/)
+//! Generate files suitable for use with [Graphviz](https://www.graphviz.org/)
 //!
 //! The `render` function generates output (e.g., an `output.dot` file) for
-//! use with [Graphviz](http://www.graphviz.org/) by walking a labeled
+//! use with [Graphviz](https://www.graphviz.org/) by walking a labeled
 //! graph. (Graphviz can then automatically lay out the nodes and edges
 //! of the graph, and also optionally render the graph as an image or
 //! other [output formats](
-//! http://www.graphviz.org/content/output-formats), such as SVG.)
+//! https://www.graphviz.org/content/output-formats), such as SVG.)
 //!
 //! Rather than impose some particular graph data structure on clients,
 //! this library exposes two traits that clients can implement on their
@@ -13,8 +13,8 @@
 //!
 //! Note: This library does not yet provide access to the full
 //! expressiveness of the [DOT language](
-//! http://www.graphviz.org/doc/info/lang.html). For example, there are
-//! many [attributes](http://www.graphviz.org/content/attrs) related to
+//! https://www.graphviz.org/doc/info/lang.html). For example, there are
+//! many [attributes](https://www.graphviz.org/content/attrs) related to
 //! providing layout hints (e.g., left-to-right versus top-down, which
 //! algorithm to use, etc). The current intention of this library is to
 //! emit a human-readable .dot file with very regular structure suitable
@@ -267,9 +267,9 @@
 //!
 //! # References
 //!
-//! * [Graphviz](http://www.graphviz.org/)
+//! * [Graphviz](https://www.graphviz.org/)
 //!
-//! * [DOT language](http://www.graphviz.org/doc/info/lang.html)
+//! * [DOT language](https://www.graphviz.org/doc/info/lang.html)
 
 #![doc(
     html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/",
@@ -292,7 +292,7 @@ pub enum LabelText<'a> {
     LabelStr(Cow<'a, str>),
 
     /// This kind of label uses the graphviz label escString type:
-    /// <http://www.graphviz.org/content/attrs#kescString>
+    /// <https://www.graphviz.org/content/attrs#kescString>
     ///
     /// Occurrences of backslashes (`\`) are not escaped; instead they
     /// are interpreted as initiating an escString escape sequence.
@@ -307,12 +307,12 @@ pub enum LabelText<'a> {
     /// printed exactly as given, but between `<` and `>`. **No
     /// escaping is performed.**
     ///
-    /// [html]: http://www.graphviz.org/content/node-shapes#html
+    /// [html]: https://www.graphviz.org/content/node-shapes#html
     HtmlStr(Cow<'a, str>),
 }
 
 /// The style for a node or edge.
-/// See <http://www.graphviz.org/doc/info/attrs.html#k:style> for descriptions.
+/// See <https://www.graphviz.org/doc/info/attrs.html#k:style> for descriptions.
 /// Note that some of these are not valid for edges.
 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 pub enum Style {
@@ -439,7 +439,7 @@ pub trait Labeller<'a> {
     /// Maps `n` to one of the [graphviz `shape` names][1]. If `None`
     /// is returned, no `shape` attribute is specified.
     ///
-    /// [1]: http://www.graphviz.org/content/node-shapes
+    /// [1]: https://www.graphviz.org/content/node-shapes
     fn node_shape(&'a self, _node: &Self::Node) -> Option<LabelText<'a>> {
         None
     }