diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 667ecca4ed0..3129eae5c2b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-09-21  Florian Weimer  <fweimer@redhat.com>
+
+	PR middle-end/81035
+	* doc/extend.texi (Common Function Attributes): Mention that
+	noreturn suppresses tail call optimization.
+
 2018-09-21  David Malcolm  <dmalcolm@redhat.com>
 
 	PR tree-optimization/87309
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 4b606c007d8..7a696556c35 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -3157,6 +3157,9 @@ The @code{noreturn} keyword does not affect the exceptional path when that
 applies: a @code{noreturn}-marked function may still return to the caller
 by throwing an exception or calling @code{longjmp}.
 
+In order to preserve backtraces, GCC will never turn calls to
+@code{noreturn} functions into tail calls.
+
 Do not assume that registers saved by the calling function are
 restored before calling the @code{noreturn} function.