1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/regress/isnan.C b/gcc/testsuite/g++.dg/cpp0x/regress/isnan.C
new file mode 100644
index 000000000..40d07e5de
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/regress/isnan.C
@@ -0,0 +1,9 @@
+// PR c++/48369
+// { dg-options -std=gnu++0x }
+
+extern "C" int isnan (double);
+
+void f(double d)
+{
+    bool b = isnan(d);
+}