Re: [Qemu-devel] [PATCH 2/3] build-sys: check static linking of UBSAN

[Eric Blake]

On 02/08/2018 10:23 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <address@hidden>
> ---
>   configure | 10 +++++++++-
>   1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/configure b/configure
> index 41d8a2666c..beb0de6a77 100755
> --- a/configure
> +++ b/configure
> @@ -5247,7 +5247,15 @@ fi
>   ##########################################
>   # checks for sanitizers
>   
> -write_c_skeleton
> +# we could use a simple skeleton for flags chekcs, but this also

s/chekcs/checks/

> +# detect the static linking issue of ubsan, see also:
> +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
> +cat > $TMPC << EOF
> +#include <stdint.h>
> +int main(void) {
> +  return INT32_MIN / -1;
> +}
> +EOF
>   
>   have_asan=no
>   have_ubsan=no

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org