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From: Stefan Weil <sw@weilnetz.de>
Date: Sat, 17 Dec 2011 09:27:29 +0100
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Subject: [Qemu-devel] [PATCH 01/11] configure: Fix compiler warnings in
	config.log (always return a value from main)
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To: qemu-devel@nongnu.org
Cc: qemu-trivial@nongnu.org, Stefan Weil <sw@weilnetz.de>

Fix several "warning: control reaches end of non-void function".

Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
 configure |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 6fd580e..03b8f35 100755
--- a/configure
+++ b/configure
@@ -1082,7 +1082,7 @@ fi
 
 # check that the C compiler works.
 cat > $TMPC <<EOF
-int main(void) {}
+int main(void) { return 0; }
 EOF
 
 if compile_object ; then
@@ -2651,7 +2651,7 @@ ucontext_coroutine=no
 if test "$darwin" != "yes"; then
   cat > $TMPC << EOF
 #include <ucontext.h>
-int main(void) { makecontext(0, 0, 0); }
+int main(void) { makecontext(0, 0, 0); return 0; }
 EOF
   if compile_prog "" "" ; then
       ucontext_coroutine=yes
@@ -2664,7 +2664,7 @@ fi
 open_by_hande_at=no
 cat > $TMPC << EOF
 #include <fcntl.h>
-int main(void) { struct file_handle fh; open_by_handle_at(0, &fh, 0); }
+int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); }
 EOF
 if compile_prog "" "" ; then
     open_by_handle_at=yes
@@ -2677,6 +2677,7 @@ linux_magic_h=no
 cat > $TMPC << EOF
 #include <linux/magic.h>
 int main(void) {
+  return 0;
 }
 EOF
 if compile_prog "" "" ; then
-- 
1.7.2.5