1 files changed, 6 insertions, 2 deletions
diff --git a/test/FrontendC/2005-07-20-SqrtNoErrno.c b/test/FrontendC/2005-07-20-SqrtNoErrno.c
index 3f85f72..a321a38 100644
--- a/test/FrontendC/2005-07-20-SqrtNoErrno.c
+++ b/test/FrontendC/2005-07-20-SqrtNoErrno.c
@@ -1,7 +1,11 @@
-// RUN: %llvmgcc %s -S -o - -fno-math-errno | grep llvm.sqrt
+// RUN: %llvmgcc %s -S -o - -fno-math-errno | FileCheck %s
+// llvm.sqrt has undefined behavior on negative inputs, so it is
+// inappropriate to translate C/C++ sqrt to this.
 #include <math.h>
 
 float foo(float X) {
-  // Check that this compiles to llvm.sqrt when errno is ignored.
+// CHECK: foo
+// CHECK: sqrtf(float %1) nounwind readonly
+  // Check that this is marked readonly when errno is ignored.
   return sqrtf(X);
 }