Index: libgo-check-failures.diff
===================================================================
--- /dev/null
+++ libgo-check-failures.diff
@@ -0,0 +1,40 @@
+diff --git a/libgo/Makefile.am b/libgo/Makefile.am
+index 526b656..31c206e 100644
+--- a/libgo/Makefile.am
++++ b/libgo/Makefile.am
+@@ -3688,7 +3688,6 @@ TEST_PACKAGES = \
+ 	os/check \
+ 	path/check \
+ 	reflect/check \
+-	regexp/check \
+ 	runtime/check \
+ 	sort/check \
+ 	strconv/check \
+@@ -3787,7 +3786,6 @@ TEST_PACKAGES = \
+ 	os/user/check \
+ 	path/filepath/check \
+ 	regexp/syntax/check \
+-	runtime/pprof/check \
+ 	sync/atomic/check \
+ 	text/scanner/check \
+ 	text/tabwriter/check \
+diff --git a/libgo/Makefile.in b/libgo/Makefile.in
+index 2254478..d2482d1 100644
+--- a/libgo/Makefile.in
++++ b/libgo/Makefile.in
+@@ -2193,7 +2193,6 @@ TEST_PACKAGES = \
+ 	os/check \
+ 	path/check \
+ 	reflect/check \
+-	regexp/check \
+ 	runtime/check \
+ 	sort/check \
+ 	strconv/check \
+@@ -2292,7 +2291,6 @@ TEST_PACKAGES = \
+ 	os/user/check \
+ 	path/filepath/check \
+ 	regexp/syntax/check \
+-	runtime/pprof/check \
+ 	sync/atomic/check \
+ 	text/scanner/check \
+ 	text/tabwriter/check \
Index: third_party/gofrontend/libgo/Makefile.am
===================================================================
--- third_party/gofrontend/libgo/Makefile.am
+++ third_party/gofrontend/libgo/Makefile.am
@@ -3688,7 +3688,6 @@
 	os/check \
 	path/check \
 	reflect/check \
-	regexp/check \
 	runtime/check \
 	sort/check \
 	strconv/check \
@@ -3787,7 +3786,6 @@
 	os/user/check \
 	path/filepath/check \
 	regexp/syntax/check \
-	runtime/pprof/check \
 	sync/atomic/check \
 	text/scanner/check \
 	text/tabwriter/check \
Index: third_party/gofrontend/libgo/Makefile.in
===================================================================
--- third_party/gofrontend/libgo/Makefile.in
+++ third_party/gofrontend/libgo/Makefile.in
@@ -2193,7 +2193,6 @@
 	os/check \
 	path/check \
 	reflect/check \
-	regexp/check \
 	runtime/check \
 	sort/check \
 	strconv/check \
@@ -2292,7 +2291,6 @@
 	os/user/check \
 	path/filepath/check \
 	regexp/syntax/check \
-	runtime/pprof/check \
 	sync/atomic/check \
 	text/scanner/check \
 	text/tabwriter/check \
Index: update_third_party.sh
===================================================================
--- update_third_party.sh
+++ update_third_party.sh
@@ -25,6 +25,8 @@
 # Apply a diff that eliminates use of the unnamed struct extension beyond what
 # -fms-extensions supports.
 (cd third_party/gofrontend && patch -p1) < libgo-noext.diff
+# Apply a diff that disables testing of packages known to fail.
+(cd third_party/gofrontend && patch -p1) < libgo-check-failures.diff
 find third_party/gofrontend -name '*.orig' -exec rm \{\} \;
 
 # Remove GPL licensed files.