[D-runtime] [D-Programming-Language/druntime] 3005e2: do overflow check correctly

[GitHub via D-runtime]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/druntime
  Commit: 3005e278f037eee57d70903fb516e43cf88e9065
      https://github.com/D-Programming-Language/druntime/commit/3005e278f037eee57d70903fb516e43cf88e9065
  Author: Walter Bright <walter at walterbright.com>
  Date:   2015-08-15 (Sat, 15 Aug 2015)

  Changed paths:
    M src/core/demangle.d
    M src/rt/lifetime.d

  Log Message:
  -----------
  do overflow check correctly


  Commit: 4bcd672b320c3869b6ee4eeec0ece42826ab931e
      https://github.com/D-Programming-Language/druntime/commit/4bcd672b320c3869b6ee4eeec0ece42826ab931e
  Author: Hara Kenji <k.hara.pg+dev at gmail.com>
  Date:   2015-08-16 (Sun, 16 Aug 2015)

  Changed paths:
    M src/core/demangle.d
    M src/rt/lifetime.d

  Log Message:
  -----------
  Merge pull request #1347 from WalterBright/overflowchk

do overflow check correctly


Compare: https://github.com/D-Programming-Language/druntime/compare/95930b2966bb...4bcd672b320c