1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/pr45038.C b/gcc/testsuite/g++.dg/pr45038.C
new file mode 100644
index 000000000..57c0c4417
--- /dev/null
+++ b/gcc/testsuite/g++.dg/pr45038.C
@@ -0,0 +1,9 @@
+// PR preprocessor/45038
+// { dg-do compile }
+// { dg-options "-Werror -Wold-style-cast" }
+
+double f(void)
+{
+  // We used to produce old-style casts for this.
+  return __DBL_MIN__;
+}