Roll Clang toolchain

Change-Id: Ia187ff9b4fb76bcbf0d57b00da528f03134203fb
diff --git a/fuchsia.ensure b/fuchsia.ensure
index e94604d..fbd8742 100644
--- a/fuchsia.ensure
+++ b/fuchsia.ensure
@@ -33,7 +33,7 @@
 
 # Clang
 @Subdir clang
-fuchsia/clang/${platform} git_revision:280fa3c2d2ddb0b5dcb31113c0b1c2259982b7e7
+fuchsia/clang/${platform} git_revision:fdfe4498af7bab15cc7716a6110f60f280bc415b
 
 # Go
 @Subdir go
diff --git a/fuchsia.versions b/fuchsia.versions
index dce9ee2..ad2877b 100644
--- a/fuchsia.versions
+++ b/fuchsia.versions
@@ -2,12 +2,12 @@
 # Do not modify manually. All changes will be overwritten.
 
 fuchsia/clang/linux-amd64
-	git_revision:280fa3c2d2ddb0b5dcb31113c0b1c2259982b7e7
-	eRoGS8qgx370QAIRgLDmbhpdPey8ti47B2Z3LMzwcXQC
+	git_revision:fdfe4498af7bab15cc7716a6110f60f280bc415b
+	gxqulZU837Lj_Zc8tC9te-IWOCqAYYzQSVzHLxDfl6oC
 
 fuchsia/clang/mac-amd64
-	git_revision:280fa3c2d2ddb0b5dcb31113c0b1c2259982b7e7
-	BQhlnpoWG081CyLzA0zB1vCr8YPdb2DO2jnYe3Lsw4oC
+	git_revision:fdfe4498af7bab15cc7716a6110f60f280bc415b
+	Vz9IRJoiptCDnRddGuvgigCFp4RslfQ7EXzwOPuFSpcC
 
 fuchsia/go/linux-amd64
 	git_revision:b8bd7d94a2ae6c80ab8b6ed5900d3eeba8a777c3