Ticket #8432: boost_1_53_0_random_device_win32_error_continue.diff

libs/random/src/random_device.cpp

@@ -68 +68 @@
     char buffer[80];
     DWORD type;
     DWORD len;
+    bool found (false);
 
-    // Find the type of the provider
+    // Find the type of a specific provider
     for(DWORD i = 0; ; ++i) {
       len = sizeof(buffer);
       if(!CryptEnumProvidersA(i, NULL, 0, &type, buffer, &len)) {
-        error("Could not find provider name");
+        if (GetLastError() == ERROR_NO_MORE_ITEMS) break;
+        continue;
       }
       if(buffer == provider) {
+        found = true;
         break;
       }
     }
+    if (!found) {
+      error("Could not find provider name");
+    }
 
     if(!CryptAcquireContextA(&hProv, NULL, provider.c_str(), type,
         CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {