Tag the Exception constructor as a printf function
This allows the compiler to analyse the format strings and
arguments for correctness.
diff --git a/common/rdr/Exception.h b/common/rdr/Exception.h
index ea10f9d..f533dcc 100644
--- a/common/rdr/Exception.h
+++ b/common/rdr/Exception.h
@@ -21,12 +21,18 @@
#ifndef __RDR_EXCEPTION_H__
#define __RDR_EXCEPTION_H__
+#ifdef __GNUC__
+# define __printf_attr(a, b) __attribute__((__format__ (__printf__, a, b)))
+#else
+# define __printf_attr(a, b)
+#endif // __GNUC__
+
namespace rdr {
struct Exception {
enum { len = 256 };
char str_[len];
- Exception(const char *format = 0, ...);
+ Exception(const char *format = 0, ...) __printf_attr(2, 3);
virtual ~Exception() {}
virtual const char* str() const { return str_; }
};