From c266b8017b88edb395e1935054d84dd77ac4ed68 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Tue, 20 May 2014 21:22:44 +0200
Subject: Make ReedSolomon exception more verbose

---
 src/ReedSolomon.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ReedSolomon.cpp b/src/ReedSolomon.cpp
index 5239a8f..dbf95a8 100644
--- a/src/ReedSolomon.cpp
+++ b/src/ReedSolomon.cpp
@@ -21,6 +21,7 @@
 
 #include "ReedSolomon.h"
 #include <stdexcept>
+#include <sstream>
 #include <stdio.h>          // For galois.h ...
 #include <string.h>         // For memcpy
 
@@ -47,7 +48,10 @@ ReedSolomon::ReedSolomon(int N, int K, bool reverse, int gfpoly, int firstRoot,
     rsData = init_rs_char(symsize, gfpoly, firstRoot, primElem, nroots, pad);
 
     if (rsData == NULL) {
-        throw std::invalid_argument("Invalid Reed-Solomon parameters!");
+        std::stringstream ss;
+        ss << "Invalid Reed-Solomon parameters! " <<
+            "N=" << N << " ; K=" << K << " ; pad=" << pad;
+        throw std::invalid_argument(ss.str());
     }
 }
 
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