Suppress warning for unused write() result

riscv/interactive.cc

@@ -72,6 +72,12 @@ processor_t *sim_t::get_core(const std::string& i)
   return get_core(p);
 }
 
+static void do_write(int fd, const void* buf, size_t n)
+{
+  auto res = write(fd, buf, n);
+  (void) res;
+}
+
 static void clear_str(bool noncanonical, int fd, std::string target_str)
 {
   if (noncanonical)
@@ -83,7 +89,7 @@ static void clear_str(bool noncanonical, int fd, std::string target_str)
       clear_motion += ' ';
     }
     clear_motion += '\r';
-    (void) write(fd, clear_motion.c_str(), clear_motion.size() + 1);
+    do_write(fd, clear_motion.c_str(), clear_motion.size() + 1);
   }
 }
 
@@ -96,7 +102,7 @@ static void send_key(bool noncanonical, int fd, keybuffer_t key_code, const int
     {
       key_motion += (char) ((key_code >> (i * BITS_PER_CHAR)) & 0xff);
     }
-    (void) write(fd, key_motion.c_str(), len);
+    do_write(fd, key_motion.c_str(), len);
   }
 }
 
@@ -144,7 +150,7 @@ static std::string readline(int fd)
         cursor_pos--;
         s.erase(cursor_pos, 1);
         if (noncanonical)
-          (void) write(fd, s.c_str(), s.size() + 1);
+          do_write(fd, s.c_str(), s.size() + 1);
         // move cursor by left arrow key
         for (unsigned i = 0; i < s.size() - cursor_pos; i++) {
           send_key(noncanonical, fd, KEYCODE_LEFT, 3);
@@ -176,7 +182,7 @@ static std::string readline(int fd)
           history_index = std::min(history_commands.size(), history_index + 1);
           s = history_commands[history_commands.size() - history_index];
           if (noncanonical)
-            (void) write(fd, s.c_str(), s.size() + 1);
+            do_write(fd, s.c_str(), s.size() + 1);
           cursor_pos = s.size();
         }
         key_buffer = 0;
@@ -192,7 +198,7 @@ static std::string readline(int fd)
             s = history_commands[history_commands.size() - history_index];
           }
           if (noncanonical)
-            (void) write(fd, s.c_str(), s.size() + 1);
+            do_write(fd, s.c_str(), s.size() + 1);
           cursor_pos = s.size();
         }
         key_buffer = 0;
@@ -221,7 +227,7 @@ static std::string readline(int fd)
         break;
       case KEYCODE_ENTER:
         if (noncanonical)
-          (void) write(fd, &ch, 1);
+          do_write(fd, &ch, 1);
         if (s.size() > initial_s_len && (history_commands.size() == 0 || s != history_commands[history_commands.size() - 1])) {
           history_commands.push_back(s);
         }
@@ -236,7 +242,7 @@ static std::string readline(int fd)
         s.insert(cursor_pos, 1, ch);
         cursor_pos++;
         if (noncanonical)
-          (void) write(fd, s.c_str(), s.size() + 1);
+          do_write(fd, s.c_str(), s.size() + 1);
         // send left arrow key to move cursor
         for (unsigned i = 0; i < s.size() - cursor_pos; i++) {
           send_key(noncanonical, fd, KEYCODE_LEFT, 3);