Fixed minor warnings

* Unreferenced exceptions in try-catch statements
* Incorrect function documentation
* Unlabelled unused variables

10 files changed, 23 insertions, 24 deletions

diff --git a/host/include/uhd/types/metadata.h b/host/include/uhd/types/metadata.h
index 0cdbc6a72..37758e16a 100644
--- a/host/include/uhd/types/metadata.h
+++ b/host/include/uhd/types/metadata.h
@@ -164,7 +164,7 @@ UHD_API uhd_error uhd_rx_metadata_out_of_sequence(
  *
  * \param h metadata handle
  * \param pp_string_out string buffer for pp_string
- * \param buffer length
+ * \param strbuffer_len buffer length
  */
 UHD_API uhd_error uhd_rx_metadata_to_pp_string(
     uhd_rx_metadata_handle h,
@@ -190,7 +190,7 @@ UHD_API uhd_error uhd_rx_metadata_error_code(
  *
  * \param h metadata handle
  * \param strerror_out string buffer for strerror
- * \param buffer length
+ * \param strbuffer_len buffer length
  */
 UHD_API uhd_error uhd_rx_metadata_strerror(
     uhd_rx_metadata_handle h,
@@ -210,7 +210,7 @@ UHD_API uhd_error uhd_rx_metadata_strerror(
  *
  * \param h metadata handle
  * \param error_out string buffer for error
- * \param buffer length
+ * \param strbuffer_len buffer length
  */
 UHD_API uhd_error uhd_rx_metadata_last_error(
     uhd_rx_metadata_handle h,
@@ -269,7 +269,7 @@ UHD_API uhd_error uhd_tx_metadata_end_of_burst(
  *
  * \param h metadata handle
  * \param error_out string buffer for error
- * \param buffer length
+ * \param strbuffer_len buffer length
  */
 UHD_API uhd_error uhd_tx_metadata_last_error(
     uhd_tx_metadata_handle h,
@@ -349,7 +349,7 @@ UHD_API uhd_error uhd_async_metadata_user_payload(
  *
  * \param h metadata handle
  * \param error_out string buffer for error
- * \param buffer length
+ * \param strbuffer_len buffer length
  */
 UHD_API uhd_error uhd_async_metadata_last_error(
     uhd_async_metadata_handle h,
diff --git a/host/include/uhd/usrp/usrp.h b/host/include/uhd/usrp/usrp.h
index 1bde694b4..67f8e0f70 100644
--- a/host/include/uhd/usrp/usrp.h
+++ b/host/include/uhd/usrp/usrp.h
@@ -155,7 +155,7 @@ UHD_API uhd_error uhd_rx_streamer_max_num_samps(
  *
  * \param h RX streamer handle
  * \param buffs pointer to buffers in which to receive samples
- * \param samps_per_buffer max number of samples per buffer
+ * \param samps_per_buff max number of samples per buffer
  * \param md handle to RX metadata in which to receive results
  * \param timeout timeout in seconds to wait for a packet
  * \param one_packet send a single packet
@@ -235,7 +235,7 @@ UHD_API uhd_error uhd_tx_streamer_max_num_samps(
  *
  * \param h TX streamer handle
  * \param buffs pointer to buffers containing samples to send
- * \param samps_per_buffer max number of samples per buffer
+ * \param samps_per_buff max number of samples per buffer
  * \param md handle to TX metadata
  * \param timeout timeout in seconds to wait for a packet
  * \param items_sent pointer to output variable for number of samples send
diff --git a/host/include/uhd/utils/soft_register.hpp b/host/include/uhd/utils/soft_register.hpp
index 9006ab5c7..a2c34a4ec 100644
--- a/host/include/uhd/utils/soft_register.hpp
+++ b/host/include/uhd/utils/soft_register.hpp
@@ -649,7 +649,7 @@ public:
                 BOOST_FOREACH(const soft_regmap_accessor_t* db, _regmap_dbs) {
                     try {
                         return db->lookup(newpath.substr(1));
-                    } catch (std::exception& e) {
+                    } catch (std::exception&) {
                         continue;
                     }
                 }
diff --git a/host/lib/transport/nirio/nirio_driver_iface_win.cpp b/host/lib/transport/nirio/nirio_driver_iface_win.cpp
index b47c6ce85..717923176 100644
--- a/host/lib/transport/nirio/nirio_driver_iface_win.cpp
+++ b/host/lib/transport/nirio/nirio_driver_iface_win.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright 2013 Ettus Research LLC
+// Copyright 2013,2015 Ettus Research LLC
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -60,14 +60,13 @@ nirio_status rio_ioctl(
     * DeviceIoControl, even when doing synchronous IO. */
     OVERLAPPED zeroedOverlapped = {0};
     DWORD outLen = 0;
-    int_fast32_t lastError = 0;
 
     if (!(DeviceIoControl(device_handle, ioctl_code,
             const_cast<void*>(write_buf), static_cast<DWORD>(write_buf_len),
             read_buf, static_cast<DWORD>(read_buf_len),
             &outLen, &zeroedOverlapped )))
     {
-        lastError = GetLastError();
+        int_fast32_t lastError = GetLastError();
         return NiRio_Status_SoftwareFault;
     }
 
diff --git a/host/lib/usrp/b200/b200_impl.cpp b/host/lib/usrp/b200/b200_impl.cpp
index 2a590b717..12baa1c14 100644
--- a/host/lib/usrp/b200/b200_impl.cpp
+++ b/host/lib/usrp/b200/b200_impl.cpp
@@ -227,7 +227,7 @@ static device_addrs_t b200_find(const device_addr_t &hint)
             try {
                 // Turn the 16-Bit product ID into a string representation
                 new_addr["product"] = B2XX_STR_NAMES[get_b200_product(handle, mb_eeprom)];
-            } catch (const uhd::runtime_error &e) {
+            } catch (const uhd::runtime_error &) {
                 // No problem if this fails -- this is just device discovery, after all.
                 new_addr["product"] = "B2??";
             }
@@ -258,7 +258,7 @@ static device::sptr b200_make(const device_addr_t &device_addr)
     try {
         return device::sptr(new b200_impl(device_addr, handle));
     }
-    catch (const uhd::usb_error &e) {
+    catch (const uhd::usb_error &) {
         UHD_MSG(status) << "Detected bad USB state; resetting." << std::flush;
         libusb::device_handle::sptr dev_handle(libusb::device_handle::get_cached_handle(
             boost::static_pointer_cast<libusb::special_handle>(handle)->get_device()
diff --git a/host/lib/usrp/b200/b200_io_impl.cpp b/host/lib/usrp/b200/b200_io_impl.cpp
index 4aa1a46af..7fcd04823 100644
--- a/host/lib/usrp/b200/b200_io_impl.cpp
+++ b/host/lib/usrp/b200/b200_io_impl.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright 2012-2014 Ettus Research LLC
+// Copyright 2012-2015 Ettus Research LLC
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -135,7 +135,7 @@ void b200_impl::set_auto_tick_rate(
         if (!uhd::math::frequencies_are_equal(_tree->access<double>("/mboards/0/tick_rate").get(), new_rate)) {
             _tree->access<double>("/mboards/0/tick_rate").set(new_rate);
         }
-    } catch (const uhd::value_error &e) {
+    } catch (const uhd::value_error &) {
         UHD_MSG(warning)
             << "Cannot automatically determine an appropriate tick rate for these sampling rates." << std::endl
             << "Consider using different sampling rates, or manually specify a suitable master clock rate." << std::endl;
diff --git a/host/lib/usrp/common/max287x.hpp b/host/lib/usrp/common/max287x.hpp
index d084dcfbe..53d967d0e 100644
--- a/host/lib/usrp/common/max287x.hpp
+++ b/host/lib/usrp/common/max287x.hpp
@@ -772,7 +772,7 @@ void max287x<max287x_regs_t>::commit()
                 if (changed_regs.find(boost::uint32_t(addr)) != changed_regs.end())
                     regs.push_back(_regs.get_reg(boost::uint32_t(addr)));
             }
-        } catch (uhd::runtime_error& e) {
+        } catch (uhd::runtime_error&) {
             // No saved state - write all regs
             for (int addr = 5; addr >= 0; addr--)
                 regs.push_back(_regs.get_reg(boost::uint32_t(addr)));
diff --git a/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp b/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
index be98f4027..17a564f21 100644
--- a/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
+++ b/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
@@ -242,7 +242,7 @@ public:
         UHD_MSG(warning) << "Attempting to set filter on E300 in network mode." << std::endl;
     }
 
-    void output_digital_test_tone(bool enb)
+    void output_digital_test_tone(UHD_UNUSED(bool enb))
     {
         UHD_THROW_INVALID_CODE_PATH();
     }
diff --git a/host/lib/usrp_clock/octoclock/kk_ihex_read.h b/host/lib/usrp_clock/octoclock/kk_ihex_read.h
index 5e210fddb..303622b18 100644
--- a/host/lib/usrp_clock/octoclock/kk_ihex_read.h
+++ b/host/lib/usrp_clock/octoclock/kk_ihex_read.h
@@ -54,11 +54,11 @@ void ihex_begin_read(struct ihex_state * const ihex);
 // Begin reading at `address` (the lowest 16 bits of which will be ignored);
 // this is required only if the high bytes of the 32-bit starting address
 // are not specified in the input data and they are non-zero
-void ihex_read_at_address(struct ihex_state *ihex,
+void ihex_read_at_address(struct ihex_state * const ihex,
                           ihex_address_t address);
 
 // Read a single character
-void ihex_read_byte(struct ihex_state *ihex, char chr, FILE* outfile);
+void ihex_read_byte(struct ihex_state * const ihex, const char byte, FILE* outfile);
 
 // Read `count` bytes from `data`
 void ihex_read_bytes(struct ihex_state * ihex,
@@ -67,7 +67,7 @@ void ihex_read_bytes(struct ihex_state * ihex,
                      FILE* outfile);
 
 // End reading (may call `ihex_data_read` if there is data waiting)
-void ihex_end_read(struct ihex_state *ihex, FILE* outfile);
+void ihex_end_read(struct ihex_state * const ihex, FILE* outfile);
 
 // Called when a complete line has been read, the record type of which is
 // passed as `type`. The `ihex` structure will have its fields `data`,
diff --git a/host/lib/usrp_clock/octoclock/octoclock_uart.cpp b/host/lib/usrp_clock/octoclock/octoclock_uart.cpp
index e879c4b70..f366bac30 100644
--- a/host/lib/usrp_clock/octoclock/octoclock_uart.cpp
+++ b/host/lib/usrp_clock/octoclock/octoclock_uart.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright 2014 Ettus Research LLC
+// Copyright 2014-2015 Ettus Research LLC
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -91,7 +91,7 @@ namespace uhd{
         while(boost::get_system_time() < exit_time){
             _update_cache();
 
-            for(char ch = _getchar(); ch != -1; ch = _getchar()){
+            for(char ch = _getchar(); ch != 0; ch = _getchar()){
                 if(ch == '\r') continue; //Skip carriage returns
                 _rxbuff += ch;
 
@@ -111,7 +111,7 @@ namespace uhd{
     void octoclock_uart_iface::_update_cache(){
         octoclock_packet_t pkt_out;
         pkt_out.len = 0;
-		pkt_out.sequence = 0;
+        pkt_out.sequence = 0;
         size_t len = 0;
 
         boost::uint8_t octoclock_data[udp_simple::mtu];
@@ -146,7 +146,7 @@ namespace uhd{
 
     char octoclock_uart_iface::_getchar(){
         if(LOCAL_STATE_AHEAD){
-            return -1;
+            return 0;
         }
 
         char ch = _cache[_state.pos];