# HG changeset patch
# User jbe
# Date 1422564358 -3600
# Node ID be880e7c1e56d52ddb8d3b3d45aaa1b78a8669a2
# Parent  2bdea79e5860434d6c26bd98c3a6149fff2bd8e3
Avoid "unused-result" compiler warning by storing return values in dummy variables

diff -r 2bdea79e5860 -r be880e7c1e56 moonbridge.c
--- a/moonbridge.c	Thu Jan 29 21:42:22 2015 +0100
+++ b/moonbridge.c	Thu Jan 29 21:45:58 2015 +0100
@@ -304,7 +304,8 @@
     if (moonbr_cond_poll) {
       /* avoid race condition if signal handler is invoked right before poll() */
       char buf[1] = {0};
-      write(moonbr_poll_signalfd_write, buf, 1);
+      int dummy;  /* avoid compiler warning */
+      dummy = write(moonbr_poll_signalfd_write, buf, 1);
     }
   } else {
     /* child process forwards certain signals to parent process */
@@ -733,7 +734,8 @@
 /* Logs an error in child process while appending error string for global errno variable */
 static void moonbr_child_log_errno(const char *message) {
   char errmsg[MOONBR_MAXSTRERRORLEN];
-  strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN);  /* use thread-safe call in case child created threads */
+  int dummy;  /* avoid compiler warning */
+  dummy = strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN);  /* use thread-safe call in case child created threads */
   fprintf(stderr, "%s: %s\n", message, errmsg);
 }
 
@@ -807,7 +809,8 @@
 /* Throws a Lua error message with an error string for errno appended to it */
 static void moonbr_child_lua_errno_error(lua_State *L, char *message) {
   char errmsg[MOONBR_MAXSTRERRORLEN];
-  strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN);  /* use thread-safe call in case child created threads */
+  int dummy;  /* avoid compiler warning */
+  dummy = strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN);  /* use thread-safe call in case child created threads */
   luaL_error(L, "%s: %s", message, errmsg);
 }
 
@@ -2235,7 +2238,8 @@
     if (byte == EOF) {
       if (ferror(file)) {
         char errmsg[MOONBR_MAXSTRERRORLEN];
-        strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN);  /* use thread-safe call in case child created threads */
+        int dummy;  /* avoid compiler warning */
+        dummy = strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN);  /* use thread-safe call in case child created threads */
         luaL_error(L, "%s", errmsg);
       } else {
         break;