1 files changed, 28 insertions, 0 deletions
diff --git a/src/compat/nullpo.cpp b/src/compat/nullpo.cpp
new file mode 100644
index 0000000..423ed8c
--- /dev/null
+++ b/src/compat/nullpo.cpp
@@ -0,0 +1,28 @@
+#include "nullpo.hpp"
+
+#include <cstdio>
+
+#include "../poison.hpp"
+
+/// Actual output function
+static
+void nullpo_info(const char *file, int line, const char *func)
+{
+    if (!file)
+        file = "??";
+    if (!func || !*func)
+        func = "unknown";
+
+    fprintf(stderr, "%s:%d: in func `%s': NULL pointer\n",
+            file, line, func);
+}
+
+bool nullpo_chk(const char *file, int line, const char *func,
+                 const void *target)
+{
+    if (target)
+        return 0;
+
+    nullpo_info(file, line, func);
+    return 1;
+}