diff --git a/test/CodeGen/address-safety-attr.cpp b/test/CodeGen/address-safety-attr.cpp
index 6556e7b..d6832a4 100644
--- a/test/CodeGen/address-safety-attr.cpp
+++ b/test/CodeGen/address-safety-attr.cpp
@@ -3,6 +3,9 @@
 // RUN: echo "src:%s" > %t
 // RUN: %clang_cc1 -emit-llvm -o - %s -fsanitize=address -fsanitize-blacklist=%t | FileCheck %s
 
+// FIXME: %t is like "src:x:\path\to\clang\test\CodeGen\address-safety-attr.cpp"
+// REQUIRES: shell
+
 // The address_safety attribute should be attached to functions
 // when AddressSanitizer is enabled, unless no_address_safety_analysis attribute
 // is present.
diff --git a/test/CodeGen/ubsan-blacklist.c b/test/CodeGen/ubsan-blacklist.c
index 1173b58..6c67f02 100644
--- a/test/CodeGen/ubsan-blacklist.c
+++ b/test/CodeGen/ubsan-blacklist.c
@@ -5,6 +5,9 @@
 // RUN: %clang_cc1 -fsanitize=unsigned-integer-overflow -fsanitize-blacklist=%t-func.blacklist -emit-llvm %s -o - | FileCheck %s --check-prefix=FUNC
 // RUN: %clang_cc1 -fsanitize=unsigned-integer-overflow -fsanitize-blacklist=%t-file.blacklist -emit-llvm %s -o - | FileCheck %s --check-prefix=FILE
 
+// FIXME: %t-file.blacklist contains DOSish paths.
+// REQUIRES: shell
+
 unsigned i;
 
 // DEFAULT: @hash