1 files changed, 15 insertions, 0 deletions
diff --git a/libphobos/testsuite/libphobos.betterc/test19924.d b/libphobos/testsuite/libphobos.betterc/test19924.d
new file mode 100644
index 0000000..e9a93ca
--- /dev/null
+++ b/libphobos/testsuite/libphobos.betterc/test19924.d
@@ -0,0 +1,15 @@
+/*******************************************/
+// https://issues.dlang.org/show_bug.cgi?id=19924
+
+import core.bitop;
+
+extern(C) void main()
+{
+    uint a = 0x01_23_45_67;
+    a = bswap(a);
+    assert(a == 0x67_45_23_01);
+
+    ulong b = 0x01_23_45_67_89_ab_cd_ef;
+    b = bswap(b);
+    assert(b == 0xef_cd_ab_89_67_45_23_01);
+}