Patchwork [07/17] configure: Fix compiler warnings in config.log (always return a value from main)

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Submitter Stefan Hajnoczi
Date Dec. 19, 2011, 11:12 a.m.
Message ID <1324293158-25433-8-git-send-email-stefanha@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/132210/
State New
Headers show

Comments

Stefan Hajnoczi - Dec. 19, 2011, 11:12 a.m.
From: Stefan Weil <sw@weilnetz.de>

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

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

Patch

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