1 files changed, 17 insertions, 0 deletions
diff --git a/lib/test/mem.c b/lib/test/mem.c
new file mode 100644
index 0000000..bccb3a3
--- /dev/null
+++ b/lib/test/mem.c
@@ -0,0 +1,17 @@
+#include <assert.h>
+
+static const unsigned char data[] = {0xde, 0xca, 0xfa, 0xde};
+static unsigned char buffer[4];
+
+void *memset(void *s, int c, long unsigned n);
+void *memcpy(void *restrict dest, const void *restrict src, long unsigned n);
+
+int
+main(void)
+{
+  memset(buffer, 0xae, sizeof(data));
+  for (unsigned i = 0; i < sizeof(data); ++i) assert(buffer[i] == 0xae);
+
+  memcpy(buffer, data, sizeof(data));
+  for (unsigned i = 0; i < sizeof(data); ++i) assert(buffer[i] == data[i]);
+}