[llvm] r329470 - [Support] Make line-number cache robust against access patterns.

[Joerg Sonnenberger via llvm-commits]

On Sat, Apr 07, 2018 at 12:44:02AM -0000, Graydon Hoare via llvm-commits wrote:
> Author: graydon
> Date: Fri Apr  6 17:44:02 2018
> New Revision: 329470
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=329470&view=rev
> Log:
> [Support] Make line-number cache robust against access patterns.

Does assert(Sz <= std::numeric_limits<uint64_t>::max()) serve a purpose?
It breaks a build with -Werror on 32bit platforms.

Joerg