Hi to all fans of bugs! The New Year is coming soon, so it is time to take stock of the the outgoing year. By tradition, we're glad to present the top list of errors found by the PVS-Studio team in open C# projects in 2019. Ready? Then let's get going.

We’re announcing the preview of Azure Spot Virtual Machines. Azure Spot Virtual Machines provide access to unused Azure compute capacity at deep discounts. Spot pricing is available on single Virtual Machines in addition to Virtual Machine Scale Sets (VMSS). This enables you to deploy a broader variety of workloads on Azure while enjoying access to discounted pricing. Spot Virtual Machines offer the same characteristics as a pay-as-you-go Virtual Machines, with differences in pricing and evictions. Spot Virtual Machines can be evicted anytime if Azure needs capacity.

The workloads that are ideally suited to run on Spot Virtual Machines include, but are not necessarily limited to, the following:

• Batch jobs.
• Workloads that can sustain and/or recover from interruptions.
• Development and test.
• Stateless applications that can use Spot Virtual Machines to scale out, opportunistically saving cost.
• Short-lived jobs which can easily be run again if the Virtual Machine is evicted.

Another year is drawing to an end, and it's a perfect time to make yourself a cup of coffee and reread the reviews of bugs collected across open-source projects over this year. This would take quite a while, of course, so we prepared this article to make it easier for you. Today we'll be recalling the most interesting dark spots that we came across in open-source C/C++ projects in 2019.