diff --git a/src/base/cprintf_formats.hh b/src/base/cprintf_formats.hh
index f55fb95..cca41e9 100644
--- a/src/base/cprintf_formats.hh
+++ b/src/base/cprintf_formats.hh
@@ -312,6 +312,12 @@
 inline void
 format_integer(std::ostream &out, signed char data, Format &fmt)
 { _format_integer(out, (int)data, fmt); }
+inline void
+format_integer(std::ostream &out, const unsigned char *data, Format &fmt)
+{ _format_integer(out, (uintptr_t)data, fmt); }
+inline void
+format_integer(std::ostream &out, const signed char *data, Format &fmt)
+{ _format_integer(out, (uintptr_t)data, fmt); }
 
 //
 // floating point formats