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-rw-r--r--test/FrontendC/2005-07-20-SqrtNoErrno.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/FrontendC/2005-07-20-SqrtNoErrno.c b/test/FrontendC/2005-07-20-SqrtNoErrno.c
index 3f85f72801..3ca70b9556 100644
--- a/test/FrontendC/2005-07-20-SqrtNoErrno.c
+++ b/test/FrontendC/2005-07-20-SqrtNoErrno.c
@@ -1,4 +1,7 @@
// RUN: %llvmgcc %s -S -o - -fno-math-errno | grep llvm.sqrt
+// llvm.sqrt has undefined behavior on negative inputs, so it is
+// inappropriate to translate C/C++ sqrt to this.
+// XFAIL: *
#include <math.h>
float foo(float X) {