From f9dedbb90347ee4d4634fc4691ff3665438f100b Mon Sep 17 00:00:00 2001
From: Amos Jeffries <squid3@treenet.co.nz>
Date: Tue, 15 Jul 2008 23:51:16 +1200
Subject: [PATCH] Supercede b8856: old compiler support

Seems the (void) casting method indicated as the best method to fix
unused return warning does not actually work. :-(

Of the other approaches, I'm picking this one used previously by the
SuSE Linux port of Squid as the cleanest.

Thanks Michael Bienia from the Ubuntu team for assistance testing.
---
 lib/util.c          | 4 ++--
 src/StoreIOBuffer.h | 4 ++--
 src/comm.cc         | 2 +-
 src/tools.cc        | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/util.c b/lib/util.c
index 4e7ec2518a..8f48a267f4 100644
--- a/lib/util.c
+++ b/lib/util.c
@@ -931,8 +931,8 @@ xint64toa(int64_t num)
 void
 default_failure_notify(const char *message)
 {
-    (void)write(2, message, strlen(message));
-    (void)write(2, "\n", 1);
+    if(write(2, message, strlen(message))) {}
+    if(write(2, "\n", 1)) {}
     abort();
 }
 
diff --git a/src/StoreIOBuffer.h b/src/StoreIOBuffer.h
index 8649e15063..058fd3fc63 100644
--- a/src/StoreIOBuffer.h
+++ b/src/StoreIOBuffer.h
@@ -68,8 +68,8 @@ public:
 
     void dump() const
     {
-        (void)fwrite(data, length, 1, stderr);
-        (void)fwrite("\n", 1, 1, stderr);
+        if(fwrite(data, length, 1, stderr)) {}
+        if(fwrite("\n", 1, 1, stderr)) {}
     }
 
     struct
diff --git a/src/comm.cc b/src/comm.cc
index 212b6bae4c..5eecf5601d 100644
--- a/src/comm.cc
+++ b/src/comm.cc
@@ -2220,7 +2220,7 @@ comm_accept(int fd, IOACB *handler, void *handler_data) {
 void CommIO::Initialise() {
     /* Initialize done pipe signal */
     int DonePipe[2];
-    (void)pipe(DonePipe);
+    if(pipe(DonePipe)) {}
     DoneFD = DonePipe[1];
     DoneReadFD = DonePipe[0];
     fd_open(DoneReadFD, FD_PIPE, "async-io completetion event: main");
diff --git a/src/tools.cc b/src/tools.cc
index 93e9d0dfd6..ca8d6a8bbc 100644
--- a/src/tools.cc
+++ b/src/tools.cc
@@ -152,7 +152,7 @@ mail_warranty(void)
 
     snprintf(command, 256, "%s %s < %s", Config.EmailProgram, Config.adminEmail, filename);
 
-    (void)system(command);		/* XXX should avoid system(3) */
+    if(system(command)) {}		/* XXX should avoid system(3) */
 
     unlink(filename);
 }
-- 
2.47.2