From: Aki Tuomi <aki.tuomi@dovecot.fi>
Date: Mon, 7 Nov 2016 21:27:01 +0000 (+0200)
Subject: m4: Fix compiler warnings
X-Git-Tag: 2.3.0.rc1~2680
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9c257ae400f8a075946a7457b45b2ff0a455ee21;p=thirdparty%2Fdovecot%2Fcore.git

m4: Fix compiler warnings

Makes it work with -Wall -W -Werror
---

diff --git a/m4/fd_passing.m4 b/m4/fd_passing.m4
index 79a44143c7..6b96c0fb94 100644
--- a/m4/fd_passing.m4
+++ b/m4/fd_passing.m4
@@ -17,13 +17,14 @@ AC_DEFUN([DOVECOT_FD_PASSING], [
         #include <fcntl.h>
         #include "fdpass.h"
         
+	static
         int nopen(void)
         {
   	      int i, n;
   	      struct stat sb;
   	      for (i = n = 0; i < 256; i++)
   		  if (fstat(i, &sb) == 0) n++;
-  	      return n;
+              return n;
         }
         int main(void)
         {
diff --git a/m4/ipv6.m4 b/m4/ipv6.m4
index 4e6ab46d01..02c400eb33 100644
--- a/m4/ipv6.m4
+++ b/m4/ipv6.m4
@@ -12,7 +12,7 @@ AC_DEFUN([DOVECOT_IPV6], [
   #include <netinet/in.h>
   #include <netdb.h>
   #include <arpa/inet.h>]],
-  [[struct in6_addr i;]])],
+  [[struct in6_addr i; (void)i;]])],
   [i_cv_type_in6_addr=yes],
   [i_cv_type_in6_addr=no])])
   if test $i_cv_type_in6_addr = yes; then
diff --git a/m4/unsetenv.m4 b/m4/unsetenv.m4
index 0c469e8809..e02b57cf4b 100644
--- a/m4/unsetenv.m4
+++ b/m4/unsetenv.m4
@@ -3,7 +3,7 @@ AC_DEFUN([DOVECOT_UNSETENV_RET_INT], [
     AC_TRY_COMPILE([
       #include <stdlib.h>
     ], [
-      if (unsetenv("env") < 0) ;
+      if (unsetenv("env") < 0) { }
     ], [
       i_cv_unsetenv_ret_int=yes
     ], [