Roll Clang toolchain

Change-Id: Iba8ff037914642075058f30c6df765f86ffee01e
diff --git a/fuchsia.ensure b/fuchsia.ensure
index 738a566..d01c235 100644
--- a/fuchsia.ensure
+++ b/fuchsia.ensure
@@ -23,7 +23,7 @@
 
 # Clang
 @Subdir clang
-fuchsia/clang/${platform} git_revision:597fe911c137f5d3ccd6678925a0848d2cc1455e
+fuchsia/clang/${platform} git_revision:ba9e83edba8ed5cd4cab63c413c863d7eea60f07
 
 # Go
 @Subdir go
diff --git a/linux64/clang.sha1 b/linux64/clang.sha1
index d4b7421..6bf6831 100644
--- a/linux64/clang.sha1
+++ b/linux64/clang.sha1
@@ -1 +1 @@
-5571c8dd5fef8f27449a0575fcd1439c1c1cfefb
+f5493efd90cd67aecbcdef4501b7db7b2bc5e62e
diff --git a/mac/clang.sha1 b/mac/clang.sha1
index 93eca7f..7edfe9b 100644
--- a/mac/clang.sha1
+++ b/mac/clang.sha1
@@ -1 +1 @@
-3d3dc064132534ceab90522e3798307096d22cdc
+fbc381e685c18422694282459f72da3638a0d8aa