node or v8 bug?

log.txt

marcel@marcel-2 ~ $ node -v
v5.10.1
marcel@marcel-2 ~ $ cat a.js
"use strict";
switch (1) {
	case 2:
		let foo;
}
foo.bar;
marcel@marcel-2 ~ $ node a.js
Stacktrace (bbbbbbbb-bbbbbbbb) 0x1be2a7a041e9 0x0: 
==== JS stack trace =========================================

Security context: 0x1be2a7ad81b1 <JS Object>
    1: /* anonymous */ [/Users/marcel/a.js:6] [pc=0x3080ab45095e] (this=0x372e780a8341 <an Object with map 0x1f501d308301>,exports=0x372e780a8341 <an Object with map 0x1f501d308301>,require=0x372e780aaba1 <JS Function require (SharedFunctionInfo 0x1e72da1420a9)>,module=0x372e780a8249 <a Module with map 0x20abb24179d1>,__filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>,__dirname=0x372e780aaa81 <String[13]: /Users/marcel>)
    3: _compile [module.js:413] [pc=0x3080ab4502bc] (this=0x372e780a8249 <a Module with map 0x20abb24179d1>,content=0x372e780aa689 <String[58]\: "use strict";\nswitch (1) {\n\x09case 2:\n\x09\x09let foo;\n}\nfoo.bar;\n>,filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>)
    4: .js [module.js:422] [pc=0x3080ab448f6b] (this=0x372e780a3241 <an Object with map 0x20abb2416d71>,module=0x372e780a8249 <a Module with map 0x20abb24179d1>,filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>)
    5: load [module.js:357] [pc=0x3080ab44669b] (this=0x372e780a8249 <a Module with map 0x20abb24179d1>,filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>)
    6: _load [module.js:314] [pc=0x3080ab43beee] (this=0x372e78060651 <JS Function Module (SharedFunctionInfo 0x1e72da116a09)>,request=0x372e7805bf19 <String[18]: /Users/marcel/a.js>,parent=0x1be2a7a04101 <null>,isMain=0x1be2a7a04231 <true>)
    7: runMain [module.js:447] [pc=0x3080ab43b906] (this=0x372e78060651 <JS Function Module (SharedFunctionInfo 0x1e72da116a09)>)
    8: startup(aka startup) [node.js:146] [pc=0x3080ab337af2] (this=0x1be2a7a04189 <undefined>)
    9: /* anonymous */ [node.js:404] [pc=0x3080ab335943] (this=0x1be2a7af2261 <JS Global Object>,process=0x1be2a7af2399 <a process with map 0x1f501d3117d9>)

==== Details ================================================

[1]: /* anonymous */ [/Users/marcel/a.js:6] [pc=0x3080ab45095e] (this=0x372e780a8341 <an Object with map 0x1f501d308301>,exports=0x372e780a8341 <an Object with map 0x1f501d308301>,require=0x372e780aaba1 <JS Function require (SharedFunctionInfo 0x1e72da1420a9)>,module=0x372e780a8249 <a Module with map 0x20abb24179d1>,__filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>,__dirname=0x372e780aaa81 <String[13]: /Users/marcel>) {
  // stack-allocated locals
  var foo = 0x1be2a7a041e9 <the hole>
  // expression stack (top to bottom)
  [04] : 0x1e72da141c89 <FixedArray[6]>
  [03] : 4
  [02] : 0x1e72da141c59 <String[3]: bar>
  [01] : 0x1be2a7a041e9 <the hole>
--------- s o u r c e   c o d e ---------
function (exports, require, module, __filename, __dirname) { "use strict";\x0aswitch (1) {\x0a\x09case 2:\x0a\x09\x09let foo;\x0a}\x0afoo.bar;\x0a\x0a}
-----------------------------------------
}

[3]: _compile [module.js:413] [pc=0x3080ab4502bc] (this=0x372e780a8249 <a Module with map 0x20abb24179d1>,content=0x372e780aa689 <String[58]\: "use strict";\nswitch (1) {\n\x09case 2:\n\x09\x09let foo;\n}\nfoo.bar;\n>,filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>) {
  // stack-allocated locals
  var wrapper = 0x372e780aa771 <String[124]\: (function (exports, require, module, __filename, __dirname) { "use strict";\nswitch (1) {\n\x09case 2:\n\x09\x09let foo;\n}\nfoo.bar;\n\n});>
  var compiledWrapper = 0x372e780aaa39 <JS Function (SharedFunctionInfo 0x1e72da141da1)>
  var dirname = 0x372e780aaa81 <String[13]: /Users/marcel>
  var require = 0x372e780aaba1 <JS Function require (SharedFunctionInfo 0x1e72da1420a9)>
  var args = 0x372e780aafd9 <JS Array[5]>
  var depth = 0
  var result = 0x1be2a7a041e9 <the hole>
  // expression stack (top to bottom)
  [10] : 0x372e780aafd9 <JS Array[5]>
  [09] : 0x372e780a8341 <an Object with map 0x1f501d308301>
  [08] : 0x372e780aaa39 <JS Function (SharedFunctionInfo 0x1e72da141da1)>
  [07] : 0x1be2a7ac8899 <JS Function apply (SharedFunctionInfo 0x1be2a7a7c279)>
--------- s o u r c e   c o d e ---------
function (content, filename) {\x0a  // remove shebang\x0a  content = content.replace(shebangRe, '');\x0a\x0a  // create wrapper function\x0a  var wrapper = Module.wrap(content);\x0a\x0a  var compiledWrapper = runInThisContext(wrapper,\x0a                                      { filename: filename, lineOffset: 0 });\x0a  if (global.v8de...

-----------------------------------------
}

[4]: .js [module.js:422] [pc=0x3080ab448f6b] (this=0x372e780a3241 <an Object with map 0x20abb2416d71>,module=0x372e780a8249 <a Module with map 0x20abb24179d1>,filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>) {
  // stack-allocated locals
  var content = 0x372e780aa689 <String[58]\: "use strict";\nswitch (1) {\n\x09case 2:\n\x09\x09let foo;\n}\nfoo.bar;\n>
  // expression stack (top to bottom)
  [04] : 0x372e780a5f59 <String[18]: /Users/marcel/a.js>
  [03] : 0x372e780aa689 <String[58]\: "use strict";\nswitch (1) {\n\x09case 2:\n\x09\x09let foo;\n}\nfoo.bar;\n>
  [02] : 0x372e780a8249 <a Module with map 0x20abb24179d1>
  [01] : 0x1e72da135e89 <JS Function Module._compile (SharedFunctionInfo 0x1e72da1172d1)>
--------- s o u r c e   c o d e ---------
function (module, filename) {\x0a  var content = fs.readFileSync(filename, 'utf8');\x0a  module._compile(internalModule.stripBOM(content), filename);\x0a}
-----------------------------------------
}

[5]: load [module.js:357] [pc=0x3080ab44669b] (this=0x372e780a8249 <a Module with map 0x20abb24179d1>,filename=0x372e780a5f59 <String[18]: /Users/marcel/a.js>) {
  // stack-allocated locals
  var extension = 0x372e780a9849 <String[3]: .js>
  // expression stack (top to bottom)
  [04] : 0x372e780a5f59 <String[18]: /Users/marcel/a.js>
  [03] : 0x372e780a8249 <a Module with map 0x20abb24179d1>
  [02] : 0x372e780a3241 <an Object with map 0x20abb2416d71>
  [01] : 0x1e72da135ef1 <JS Function Module._extensions..js (SharedFunctionInfo 0x1e72da117379)>
--------- s o u r c e   c o d e ---------
function (filename) {\x0a  debug('load %j for module %j', filename, this.id);\x0a\x0a  assert(!this.loaded);\x0a  this.filename = filename;\x0a  this.paths = Module._nodeModulePaths(path.dirname(filename));\x0a\x0a  var extension = path.extname(filename) || '.js';\x0a  if (!Module._extensions[extension]) extension = '.js';\x0a  Module...

-----------------------------------------
}

[6]: _load [module.js:314] [pc=0x3080ab43beee] (this=0x372e78060651 <JS Function Module (SharedFunctionInfo 0x1e72da116a09)>,request=0x372e7805bf19 <String[18]: /Users/marcel/a.js>,parent=0x1be2a7a04101 <null>,isMain=0x1be2a7a04231 <true>) {
  // stack-allocated locals
  var filename = 0x372e780a5f59 <String[18]: /Users/marcel/a.js>
  var cachedModule = 0x1be2a7a04189 <undefined>
  var module = 0x372e780a8249 <a Module with map 0x20abb24179d1>
  var hadException = 0x1be2a7a04231 <true>
  // expression stack (top to bottom)
  [07] : 0x372e780a5f59 <String[18]: /Users/marcel/a.js>
  [06] : 0x372e780a8249 <a Module with map 0x20abb24179d1>
  [05] : 0x1e72da135df9 <JS Function Module.load (SharedFunctionInfo 0x1e72da117181)>
  [04] : 0x372e780604c9 <FixedArray[29]>
--------- s o u r c e   c o d e ---------
function (request, parent, isMain) {\x0a  if (parent) {\x0a    debug('Module._load REQUEST %s parent: %s', request, parent.id);\x0a  }\x0a\x0a  var filename = Module._resolveFilename(request, parent);\x0a\x0a  var cachedModule = Module._cache[filename];\x0a  if (cachedModule) {\x0a    return cachedModule.exports;\x0a  }\x0a\x0a  if (NativeModu...

-----------------------------------------
}

[7]: runMain [module.js:447] [pc=0x3080ab43b906] (this=0x372e78060651 <JS Function Module (SharedFunctionInfo 0x1e72da116a09)>) {
  // expression stack (top to bottom)
  [04] : 0x1be2a7a04231 <true>
  [03] : 0x1be2a7a04101 <null>
  [02] : 0x372e7805bf19 <String[18]: /Users/marcel/a.js>
  [01] : 0x372e78060651 <JS Function Module (SharedFunctionInfo 0x1e72da116a09)>
  [00] : 0x1e72da135d11 <JS Function Module._load (SharedFunctionInfo 0x1e72da117031)>
--------- s o u r c e   c o d e ---------
function () {\x0a  // Load the main module--the command line argument.\x0a  Module._load(process.argv[1], null, true);\x0a  // Handle any nextTicks added in the first tick of the program\x0a  process._tickCallback();\x0a}
-----------------------------------------
}

[8]: startup(aka startup) [node.js:146] [pc=0x3080ab337af2] (this=0x1be2a7a04189 <undefined>) {
  // stack-allocated locals
  var EventEmitter = 0x372e780041e9 <JS Function EventEmitter (SharedFunctionInfo 0x1be2a7aea671)>
  var _process = 0x372e7803f7b1 <an Object with map 0x20abb240a929>
  var cluster = 0x1be2a7a04189 <undefined>
  var path = 0x372e7805b8c9 <an Object with map 0x20abb240c089>
  var Module = 0x372e78060651 <JS Function Module (SharedFunctionInfo 0x1e72da116a09)>
  var vm = 0x1be2a7a04189 <undefined>
  var fs = 0x1be2a7a04189 <undefined>
  var internalModule = 0x1be2a7a04189 <undefined>
  var filename = 0x1be2a7a04189 <undefined>
  var source = 0x1be2a7a04189 <undefined>
  var debugTimeout = 0x1be2a7a04189 <undefined>
  var cliRepl = 0x1be2a7a04189 <undefined>
  // heap-allocated locals
  var code = 0x1be2a7a04189 <undefined>
  // expression stack (top to bottom)
  [13] : 0x372e78060651 <JS Function Module (SharedFunctionInfo 0x1e72da116a09)>
  [12] : 0x1e72da135ff9 <JS Function Module.runMain (SharedFunctionInfo 0x1e72da117571)>
--------- s o u r c e   c o d e ---------
function startup() {\x0a    var EventEmitter = NativeModule.require('events');\x0a    process._eventsCount = 0;\x0a\x0a    Object.setPrototypeOf(process, Object.create(EventEmitter.prototype, {\x0a      constructor: {\x0a        value: process.constructor\x0a      }\x0a    }));\x0a\x0a    EventEmitter.call(process);\x0a\x0a    process.EventEmitter = ...

-----------------------------------------
}

[9]: /* anonymous */ [node.js:404] [pc=0x3080ab335943] (this=0x1be2a7af2261 <JS Global Object>,process=0x1be2a7af2399 <a process with map 0x1f501d3117d9>) {
  // stack-allocated locals
  var startup = 0x1be2a7af22d1 <JS Function startup (SharedFunctionInfo 0x1be2a7ae2c61)>
  var EXPOSE_INTERNALS = 0x1be2a7a04299 <false>
  // heap-allocated locals
  var process = 0x1be2a7af2399 <a process with map 0x1f501d3117d9>
  var setupProcessObject = 0x1be2a7afa9d1 <JS Function setupProcessObject (SharedFunctionInfo 0x1be2a7ae2d09)>
  var setupGlobalVariables = 0x1be2a7af2289 <JS Function setupGlobalVariables (SharedFunctionInfo 0x1be2a7ae2db1)>
  var setupGlobalTimeouts = 0x11ae50a0b629 <JS Function setupGlobalTimeouts (SharedFunctionInfo 0x1be2a7ae2e59)>
  var setupGlobalConsole = 0x11ae50a0b671 <JS Function setupGlobalConsole (SharedFunctionInfo 0x1be2a7ae2f01)>
  var setupProcessFatal = 0x1be2a7afaa19 <JS Function setupProcessFatal (SharedFunctionInfo 0x1be2a7ae2fa9)>
  var evalScript = 0x11ae50a0b6b9 <JS Function evalScript (SharedFunctionInfo 0x1be2a7ae3051)>
  var preloadModules = 0x11ae50a0b701 <JS Function preloadModules (SharedFunctionInfo 0x1be2a7ae30f9)>
  var ContextifyScript = 0x1be2a7ae5ac9 <JS Function ContextifyScript (SharedFunctionInfo 0x1be2a7ae5a39)>
  var runInThisContext = 0x1be2a7af21d1 <JS Function runInThisContext (SharedFunctionInfo 0x1be2a7ae31a1)>
  var NativeModule = 0x1be2a7af2219 <JS Function NativeModule (SharedFunctionInfo 0x1be2a7ae3249)>
  // expression stack (top to bottom)
  [03] : 0x1be2a7a04189 <undefined>
  [02] : 0x1be2a7af22d1 <JS Function startup (SharedFunctionInfo 0x1be2a7ae2c61)>
--------- s o u r c e   c o d e ---------
function (process) {\x0a  this.global = this;\x0a\x0a  function startup() {\x0a    var EventEmitter = NativeModule.require('events');\x0a    process._eventsCount = 0;\x0a\x0a    Object.setPrototypeOf(process, Object.create(EventEmitter.prototype, {\x0a      constructor: {\x0a        value: process.constructor\x0a      }\x0a    }));\x0a\x0a    Eve...

-----------------------------------------
}

=====================