[libvirt] [PATCH] virsh: Avoid division by 0 in vshCalloc

vshCalloc function uses xalloc_oversized macro that can't take 0 as it's second argument. If vshCalloc is called with size 0, virsh ends with a floating point exception. This patch changes vshCalloc to return NULL if no memory is requested. --- tools/virsh.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 53d1825..d3d5c6a 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -460,6 +460,9 @@ _vshCalloc(vshControl *ctl, size_t nmemb, size_t size, const char *filename, int { char *x; + if (!size) + return NULL; + if (!xalloc_oversized(nmemb, size) && VIR_ALLOC_N(x, nmemb * size) == 0) return x; -- 1.7.8.6