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[Qemu-devel] [PATCH] Suppress warning: zero-length gnu_printf format str


From: Markus Armbruster
Subject: [Qemu-devel] [PATCH] Suppress warning: zero-length gnu_printf format string
Date: Mon, 11 Oct 2010 14:52:32 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)

Warns about this line in check-qjson.c:
    QObject *obj = qobject_from_json("");

The obvious fix (add -Wno-format-zero-length to gcc_flags) doesn't
work, because -Wall switches it on again.  Fix by putting configured
flags last.

Signed-off-by: Markus Armbruster <address@hidden>
---
 configure |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index d303061..3a12f92 100755
--- a/configure
+++ b/configure
@@ -146,7 +146,8 @@ QEMU_CFLAGS="-I. -I\$(SRC_PATH) $QEMU_CFLAGS"
 LDFLAGS="-g $LDFLAGS"
 
 gcc_flags="-Wold-style-declaration -Wold-style-definition -Wtype-limits"
-gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers 
$gcc_flags"
+gcc_flags="-Wformat-security -Wformat-y2k -Wno-format-zero-length $gcc_flags"
+gcc_flags="-Winit-self -Wignored-qualifiers $gcc_flags"
 gcc_flags="-Wmissing-include-dirs -Wempty-body -Wnested-externs $gcc_flags"
 gcc_flags="-fstack-protector-all $gcc_flags"
 cat > $TMPC << EOF
@@ -154,7 +155,7 @@ int main(void) { return 0; }
 EOF
 for flag in $gcc_flags; do
     if compile_prog "-Werror $QEMU_CFLAGS" "-Werror $flag" ; then
-       QEMU_CFLAGS="$flag $QEMU_CFLAGS"
+       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
     fi
 done
 
-- 
1.7.2.3




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