[SR-4945] Hard GSB crash

[dabrahams]

Previous ID	SR-4945
Radar	rdar://problem/32296747
Original Reporter	@dabrahams
Type	Bug
Status	Closed
Resolution	Done

Attachment: Download

Additional Detail from JIRA

Votes	0
Component/s	Compiler
Labels	Bug, CompilerCrash, TypeChecker
Assignee	@DougGregor
Priority	Medium

md5: e3656456d3088368dc97a1ee7ee669c0

Issue Description:

Apply the attached patch to Github master d94b498 and rebuild for the attached crash

Other hashes:

clang b4252460af Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
cmark d875488 Merge pull request #4 from llvm-beanz/generate-cmark-exports
compiler-rt cbf6089b1 Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
llbuild 58586af Merge pull request #170 from neonichu/fix-set-difference
lldb d55dabb Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
llvm e23c4f1c07c Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
ninja 256bf89 forgot to bump version in manual for 1.7.2 release
swift d94b498 Merge pull request #9775 from eeckstein/fix-bench
swift-corelibs-foundation 1b58627 Fix `(nsError as Error).localizedDescription` output (#967)
swift-corelibs-libdispatch e85f5ee Merge pull request #247 from apple/revert-242-sizeof
swift-corelibs-xctest 2e0aedc Merge pull request #189 from tkremenek/force-tests-swift-ver-3
swift-integration-tests 641971a Merge pull request #21 from apple/revert-20-revert-19-revert-6a20dc2
swift-xcode-playground-support 05737c4 Merge pull request #14 from tkremenek/update-swift-4
swiftpm 388db8d Merge pull request #1192 from ddunbar/stable-ids

[dabrahams]

@swift-ci create

[slavapestov]

Still reproduces if I use the master compiler and the stdlib from that branch.

[slavapestov]

#11076

[dabrahams]

Thanks