1 files changed, 16 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0748.md b/compiler/rustc_error_codes/src/error_codes/E0748.md
new file mode 100644
index 000000000..69f1c0261
--- /dev/null
+++ b/compiler/rustc_error_codes/src/error_codes/E0748.md
@@ -0,0 +1,16 @@
+A raw string isn't correctly terminated because the trailing `#` count doesn't
+match its leading `#` count.
+
+Erroneous code example:
+
+```compile_fail,E0748
+let dolphins = r##"Dolphins!"#; // error!
+```
+
+To terminate a raw string, you have to have the same number of `#` at the end
+as at the beginning. Example:
+
+```
+let dolphins = r#"Dolphins!"#; // One `#` at the beginning, one at the end so
+                               // all good!
+```