Suppress compiler warnings.

Suppress compiler warnings regarding write(2) returns values being
ignored.  Since they are used in signal handlers, it's impossible to
print info about errors. To shut up the warnings, create a static
variable and assign the return values from write().

diff --git a/src/main/pgpool_main.c b/src/main/pgpool_main.c
index fc794f14728f12ba175421a1d82f732979956a0d..47b38cfd5486bc15e9fa2d344c9e6e58d4e28386 100644 (file)
--- a/src/main/pgpool_main.c
+++ b/src/main/pgpool_main.c
@@ -201,6 +201,12 @@ static pid_t wd_lifecheck_pid = 0; /* pid for child process handling watchdog li
 BACKEND_STATUS* my_backend_status[MAX_NUM_BACKENDS];           /* Backend status buffer */
 int my_master_node_id;         /* Master node id buffer */
 
+/*
+ * Dummy varibale to suppress compiler warnings by discarding return values
+ * from write(2) in signal handlers
+ */
+static int dummy_status;
+
 /*
 * pgpool main program
 */
@@ -1519,7 +1525,7 @@ static RETSIGTYPE sigusr1_handler(int sig)
        POOL_SETMASK(&BlockSig);
        sigusr1_request = 1;
 
-       write(pipe_fds[1], "\0", 1);
+       dummy_status = write(pipe_fds[1], "\0", 1);
 
 #ifdef NOT_USED
        if(write(pipe_fds[1], "\0", 1) < 0)
@@ -2307,7 +2313,7 @@ static RETSIGTYPE reap_handler(int sig)
 
        if (pipe_fds[1])
        {
-               write(pipe_fds[1], "\0", 1);
+               dummy_status = write(pipe_fds[1], "\0", 1);
        }
 
 #ifdef NOT_USED
@@ -2614,7 +2620,7 @@ static RETSIGTYPE wakeup_handler(int sig)
        if (processState != INITIALIZING)
        {
                POOL_SETMASK(&BlockSig);
-               write(pipe_fds[1], "\0", 1);
+               dummy_status = write(pipe_fds[1], "\0", 1);
 #ifdef NOT_USED
                if(write(pipe_fds[1], "\0", 1) < 0)
                        ereport(WARNING,
@@ -2635,7 +2641,7 @@ static RETSIGTYPE reload_config_handler(int sig)
 
        POOL_SETMASK(&BlockSig);
        reload_config_request = 1;
-       write(pipe_fds[1], "\0", 1);
+       dummy_status = write(pipe_fds[1], "\0", 1);
 #ifdef NOT_USED
        if(write(pipe_fds[1], "\0", 1) < 0)
         ereport(WARNING,