Do not abort on qemu_malloc(0) in production builds
qemu_malloc() does not allow size=0 to be passed in and aborts on this behavior.
Unfortunately, there is good reason to believe that within qemu, there are a
number of, so far, undetected places that assume size=0 can be safely passed.
Since we do not want to abort unnecessarily in production builds, return
qemu_malloc(1) whenever the version file indicates that this is a production
build.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/configure b/configure
index a29839e..273b6b7 100755
--- a/configure
+++ b/configure
@@ -256,6 +256,7 @@
pkgversion=""
check_utests="no"
user_pie="no"
+zero_malloc=""
# OS specific
if check_define __linux__ ; then
@@ -1792,8 +1793,9 @@
# Consult white-list to determine whether to enable werror
# by default. Only enable by default for git builds
+z_version=`cut -f3 -d. $source_path/VERSION`
+
if test -z "$werror" ; then
- z_version=`cut -f3 -d. $source_path/VERSION`
if test "$z_version" = "50" -a \
"$linux" = "yes" ; then
werror="yes"
@@ -1802,6 +1804,16 @@
fi
fi
+# Disable zero malloc errors for official releases unless explicitly told to
+# enable/disable
+if test -z "$zero_malloc" ; then
+ if test "$z_version" = "50" ; then
+ zero_malloc="no"
+ else
+ zero_malloc="yes"
+ fi
+fi
+
if test "$werror" = "yes" ; then
QEMU_CFLAGS="-Werror $QEMU_CFLAGS"
fi
@@ -2109,6 +2121,10 @@
echo "CONFIG_UNAME_RELEASE=\"$uname_release\"" >> $config_host_mak
+if test "$zero_malloc" = "yes" ; then
+ echo "CONFIG_ZERO_MALLOC=y" >> $config_host_mak
+fi
+
# USB host support
case "$usb" in
linux)
