Remove to_string, replacing with std::to_string

Convert to_u32bit to use the new C++0x library func stoul instead of
hand-written code.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/pubkey/rsa/rsa.cpp b/src/pubkey/rsa/rsa.cpp
index 83e6e1b17..38ea1eeca 100644
--- a/src/pubkey/rsa/rsa.cpp
+++ b/src/pubkey/rsa/rsa.cpp
@@ -60,7 +60,7 @@ RSA_PrivateKey::RSA_PrivateKey(RandomNumberGenerator& rng,
    {
    if(bits < 512)
       throw Invalid_Argument(algo_name() + ": Can't make a key that is only " +
-                             to_string(bits) + " bits long");
+                             std::to_string(bits) + " bits long");
    if(exp < 3 || exp % 2 == 0)
       throw Invalid_Argument(algo_name() + ": Invalid encryption exponent");