Out of range exception in AttributesRule

[jpsim]

When running on test/Interpreter/SDK/objc_mangling.swift from Swift's source.

2017-01-01 11:20:28.001296 swiftlint[1964:2493303] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSRegularExpression enumerateMatchesInString:options:range:usingBlock:]: Range or index out of bounds'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fffabebde7b __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x00007fffc0aa3cad objc_exception_throw + 48
    2   CoreFoundation                      0x00007fffabf3c99d +[NSException raise:format:] + 205
    3   Foundation                          0x00007fffad84c3f8 -[NSRegularExpression(NSMatching) enumerateMatchesInString:options:range:usingBlock:] + 375
    4   Foundation                          0x00007fffad899f66 -[NSRegularExpression(NSMatching) firstMatchInString:options:range:] + 156
    5   SwiftLintFramework                  0x000000010131374f _TFV18SwiftLintFramework14AttributesRuleP33_DE7F7E58C782210DC97A8A1A7663B2A826attributeContainsParameterfT14attributeRangeVSC8_NSRange4lineV21SourceKittenFramework4Line4fileCS2_4File_Sb + 1551
    6   SwiftLintFramework                  0x0000000101312fb8 _TFFV18SwiftLintFramework14AttributesRuleP33_DE7F7E58C782210DC97A8A1A7663B2A831createAlwaysOnNewLineAttributesFTGSaTSSSb__16attributesTokensGSaTSSVSC8_NSRange__4lineV21SourceKittenFramework4Line4fileCS2_4File_GVs3SetSS_U_FTSSS1__TSSSb_ + 776
    7   SwiftLintFramework                  0x0000000101318ecb _TPA__TFFV18SwiftLintFramework14AttributesRuleP33_DE7F7E58C782210DC97A8A1A7663B2A831createAlwaysOnNewLineAttributesFTGSaTSSSb__16attributesTokensGSaTSSVSC8_NSRange__4lineV21SourceKittenFramework4Line4fileCS2_4File_GVs3SetSS_U_FTSSS1__TSSSb_ + 891
    8   SwiftLintFramework                  0x0000000101313a0b _TTRXFo_oSSdVSC8_NSRange_oSSdSbzoPs5Error__XFo_iTSSS___iTSSSb_zoPS0___ + 251
    9   SwiftLintFramework                  0x0000000101318fe4 _TPA__TTRXFo_oSSdVSC8_NSRange_oSSdSbzoPs5Error__XFo_iTSSS___iTSSSb_zoPS0___ + 148
    10  libswiftCore.dylib                  0x0000000101877ad6 _TFEsPs10Collection3mapurfzFzWx8Iterator7Element_qd__GSaqd___ + 838
    11  SwiftLintFramework                  0x00000001013128a2 _TFV18SwiftLintFramework14AttributesRuleP33_DE7F7E58C782210DC97A8A1A7663B2A831createAlwaysOnNewLineAttributesfTGSaTSSSb__16attributesTokensGSaTSSVSC8_NSRange__4lineV21SourceKittenFramework4Line4fileCS2_4File_GVs3SetSS_ + 1458
    12  SwiftLintFramework                  0x000000010130de36 _TFV18SwiftLintFramework14AttributesRuleP33_DE7F7E58C782210DC97A8A1A7663B2A811isViolationfT10lineNumberSi4fileC21SourceKittenFramework4File27attributeShouldBeOnSameLineSb_Sb + 3334
    13  SwiftLintFramework                  0x000000010130ae80 _TFV18SwiftLintFramework14AttributesRuleP33_DE7F7E58C782210DC97A8A1A7663B2A812validateKindfT4fileC21SourceKittenFramework4File27attributeShouldBeOnSameLineSb10dictionaryGVs10DictionarySSPS1_22SourceKitRepresentable___GSaVS_14StyleViolation_ + 1344
    14  SwiftLintFramework                  0x000000010130a880 _TFV18SwiftLintFramework14AttributesRule12validateFilefTC21SourceKittenFramework4File4kindOS1_20SwiftDeclarationKind10dictionaryGVs10DictionarySSPS1_22SourceKitRepresentable___GSaVS_14StyleViolation_ + 768
    15  SwiftLintFramework                  0x0000000101315b99 _TTWV18SwiftLintFramework14AttributesRuleS_7ASTRuleS_FS1_12validateFilefTC21SourceKittenFramework4File4kindwx8KindType10dictionaryGVs10DictionarySSPS2_22SourceKitRepresentable___GSaVS_14StyleViolation_ + 297
    16  SwiftLintFramework                  0x0000000101329092 _TFFe18SwiftLintFrameworkRxS_7ASTRuleWx8KindType8RawValue_zSSrS0_12validateFileFTC21SourceKittenFramework4File10dictionaryGVs10DictionarySSPS3_22SourceKitRepresentable___GSaVS_14StyleViolation_U_FGS5_SSPS6___GSaS7__ + 1698
    17  SwiftLintFramework                  0x00000001013293bf _TPA__TFFe18SwiftLintFrameworkRxS_7ASTRuleWx8KindType8RawValue_zSSrS0_12validateFileFTC21SourceKittenFramework4File10dictionaryGVs10DictionarySSPS3_22SourceKitRepresentable___GSaVS_14StyleViolation_U_FGS5_SSPS6___GSaS7__ + 191
    18  SwiftLintFramework                  0x0000000101329440 _TTRGRx18SwiftLintFramework7ASTRuleWx8KindType8RawValue_zSSrXFo_oGVs10DictionarySSP21SourceKittenFramework22SourceKitRepresentable___oGSaVS_14StyleViolation_zoPs5Error__XFo_iGS3_SSPS5____iGSaS6__zoPS7___ + 96
    19  SwiftLintFramework                  0x0000000101329682 _TPA__TTRGRx18SwiftLintFramework7ASTRuleWx8KindType8RawValue_zSSrXFo_oGVs10DictionarySSP21SourceKittenFramework22SourceKitRepresentable___oGSaVS_14StyleViolation_zoPs5Error__XFo_iGS3_SSPS5____iGSaS6__zoPS7___ + 242
    20  libswiftCore.dylib                  0x000000010194cb1f _TFEsPs8Sequence7flatMapuRd__S_rfzFzWx8Iterator7Element_qd__GSaWd__S0_S1___ + 639
    21  SwiftLintFramework                  0x0000000101328952 _TFe18SwiftLintFrameworkRxS_7ASTRuleWx8KindType8RawValue_zSSrS0_12validateFilefTC21SourceKittenFramework4File10dictionaryGVs10DictionarySSPS3_22SourceKitRepresentable___GSaVS_14StyleViolation_ + 626
    22  SwiftLintFramework                  0x000000010130a149 _TFV18SwiftLintFramework14AttributesRule12validateFilefC21SourceKittenFramework4FileGSaVS_14StyleViolation_ + 265
    23  SwiftLintFramework                  0x000000010131641d _TTWV18SwiftLintFramework14AttributesRuleS_4RuleS_FS1_12validateFilefC21SourceKittenFramework4FileGSaVS_14StyleViolation_ + 269
    24  SwiftLintFramework                  0x000000010113e9e3 _TFFV18SwiftLintFramework6LinterP33_5A5F37FCDEE0B4D78BAE05A90BA8A06218getStyleViolationsFSbTGSaVS_14StyleViolation_GSaT2idSS4timeSd___U_FPS_4Rule_GSaS1__ + 1203
    25  SwiftLintFramework                  0x00000001011438b6 _TPA__TFFV18SwiftLintFramework6LinterP33_5A5F37FCDEE0B4D78BAE05A90BA8A06218getStyleViolationsFSbTGSaVS_14StyleViolation_GSaT2idSS4timeSd___U_FPS_4Rule_GSaS1__ + 310
    26  SwiftLintFramework                  0x000000010135a651 _TTRG__rXFo_ix_oGSaqd____XFo_ix_iGSaqd____ + 81
    27  SwiftLintFramework                  0x000000010135a802 _TPA__TTRG__rXFo_ix_oGSaqd____XFo_ix_iGSaqd____ + 226
    28  SwiftLintFramework                  0x000000010135afab _TFFE18SwiftLintFrameworkSa11parallelMapurFT9transformFxqd___GSaqd___U_FSiT_ + 555
    29  SwiftLintFramework                  0x000000010135b3b0 _TPA__TFFE18SwiftLintFrameworkSa11parallelMapurFT9transformFxqd___GSaqd___U_FSiT_ + 336
    30  libclang_rt.tsan_osx_dynamic.dylib  0x00000001001679e2 __wrap_dispatch_apply_block_invoke + 98
    31  libdispatch.dylib                   0x00000001020e896f _dispatch_client_callout2 + 8
    32  libdispatch.dylib                   0x00000001020ed107 _dispatch_apply_serial + 108
    33  libdispatch.dylib                   0x00000001020daf5c _dispatch_client_callout + 8
    34  libdispatch.dylib                   0x00000001020f22fa _dispatch_sync_function_invoke + 288
    35  libdispatch.dylib                   0x00000001020e82a7 dispatch_apply_f + 459
    36  libclang_rt.tsan_osx_dynamic.dylib  0x0000000100167955 wrap_dispatch_apply + 261
    37  libswiftCore.dylib                  0x0000000101aa4058 _swift_dispatch_apply_current + 72
    38  libswiftDispatch.dylib              0x0000000101daf3f4 _TZFE8DispatchCSo13DispatchQueue17concurrentPerformfT10iterationsSi7executeFSiT__T_ + 116
    39  SwiftLintFramework                  0x000000010135a1fb _TFE18SwiftLintFrameworkSa11parallelMapurfT9transformFxqd___GSaqd___ + 1979
    40  SwiftLintFramework                  0x000000010135980e _TFE18SwiftLintFrameworkSa15parallelFlatMapurfT9transformFxGSaqd____GSaqd___ + 318
    41  SwiftLintFramework                  0x000000010113e440 _TFV18SwiftLintFramework6LinterP33_5A5F37FCDEE0B4D78BAE05A90BA8A06218getStyleViolationsfSbTGSaVS_14StyleViolation_GSaT2idSS4timeSd___ + 848
    42  SwiftLintFramework                  0x000000010113e0d1 _TFV18SwiftLintFramework6Linterg15styleViolationsGSaVS_14StyleViolation_ + 65
    43  swiftlint                           0x0000000100019c60 _TFFV9swiftlint11LintCommand3runFVS_11LintOptionsGO6Result6ResultT_GO10Commandant15CommandantErrorT___U_FV18SwiftLintFramework6LinterT_ + 1616
    44  swiftlint                           0x000000010001a3cf _TPA__TFFV9swiftlint11LintCommand3runFVS_11LintOptionsGO6Result6ResultT_GO10Commandant15CommandantErrorT___U_FV18SwiftLintFramework6LinterT_ + 1055
    45  swiftlint                           0x000000010000b631 _TFFFFE9swiftlintV18SwiftLintFramework13Configuration18visitLintableFilesFTSS6actionSS8useSTDINSb5quietSb19useScriptInputFilesSb8parallelSb12visitorBlockFVS0_6LinterT__GO6Result6ResultGSaC21SourceKittenFramework4File_GO10Commandant15CommandantErrorT___U0_FGSaS6__GS4_GSaS6__GS8_T___U_FS6_T_U0_FT_T_ + 1537
    46  swiftlint                           0x000000010000e013 _TPA__TFFFFE9swiftlintV18SwiftLintFramework13Configuration18visitLintableFilesFTSS6actionSS8useSTDINSb5quietSb19useScriptInputFilesSb8parallelSb12visitorBlockFVS0_6LinterT__GO6Result6ResultGSaC21SourceKittenFramework4File_GO10Commandant15CommandantErrorT___U0_FGSaS6__GS4_GSaS6__GS8_T___U_FS6_T_U0_FT_T_ + 1171
    47  swiftlint                           0x000000010000b702 _TTRXFo__zoPs5Error__XFo__iT_zoPS___ + 50
    48  swiftlint                           0x000000010000e11c _TPA__TTRXFo__zoPs5Error__XFo__iT_zoPS___ + 140
    49  libswiftObjectiveC.dylib            0x0000000101fe34d6 _TF10ObjectiveC15autoreleasepoolurFzT8invokingFzT_x_x + 54
    50  swiftlint                           0x000000010000a683 _TFFFE9swiftlintV18SwiftLintFramework13Configuration18visitLintableFilesFTSS6actionSS8useSTDINSb5quietSb19useScriptInputFilesSb8parallelSb12visitorBlockFVS0_6LinterT__GO6Result6ResultGSaC21SourceKittenFramework4File_GO10Commandant15CommandantErrorT___U0_FGSaS6__GS4_GSaS6__GS8_T___U_FS6_T_ + 3235
    51  swiftlint                           0x000000010000d6cf _TPA__TFFFE9swiftlintV18SwiftLintFramework13Configuration18visitLintableFilesFTSS6actionSS8useSTDINSb5quietSb19useScriptInputFilesSb8parallelSb12visitorBlockFVS0_6LinterT__GO6Result6ResultGSaC21SourceKittenFramework4File_GO10Commandant15CommandantErrorT___U0_FGSaS6__GS4_GSaS6__GS8_T___U_FS6_T_ + 1583
    52  swiftlint                           0x000000010000b7fb _TFFFE9swiftlintV18SwiftLintFramework13Configuration18visitLintableFilesFTSS6actionSS8useSTDINSb5quietSb19useScriptInputFilesSb8parallelSb12visitorBlockFVS0_6LinterT__GO6Result6ResultGSaC21SourceKittenFramework4File_GO10Commandant15CommandantErrorT___U0_FGSaS6__GS4_GSaS6__GS8_T___U0_FSiT_ + 123
    53  swiftlint                           0x000000010000d97a _TPA__TFFFE9swiftlintV18SwiftLintFramework13Configuration18visitLintableFilesFTSS6actionSS8useSTDINSb5quietSb19useScriptInputFilesSb8parallelSb12visitorBlockFVS0_6LinterT__GO6Result6ResultGSaC21SourceKittenFramework4File_GO10Commandant15CommandantErrorT___U0_FGSaS6__GS4_GSaS6__GS8_T___U0_FSiT_ + 170
    54  libclang_rt.tsan_osx_dynamic.dylib  0x00000001001679e2 __wrap_dispatch_apply_block_invoke + 98
    55  libdispatch.dylib                   0x00000001020e896f _dispatch_client_callout2 + 8
    56  libdispatch.dylib                   0x00000001020e87b4 _dispatch_apply_invoke + 147
    57  libdispatch.dylib                   0x00000001020daf5c _dispatch_client_callout + 8
    58  libdispatch.dylib                   0x00000001020dd48c _dispatch_root_queue_drain + 1364
    59  libdispatch.dylib                   0x00000001020dcee8 _dispatch_worker_thread3 + 114
    60  libsystem_pthread.dylib             0x000000010215289a _pthread_wqthread + 1299
    61  libsystem_pthread.dylib             0x0000000102152375 start_wqthread + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException

[jpsim]

Reduced crasher to @objc class ⽺ {}.

[jpsim]

I have to leave, but here's the fix:

diff --git a/Source/SwiftLintFramework/Rules/AttributesRule.swift b/Source/SwiftLintFramework/Rules/AttributesRule.swift
index 598936b..57b1f74 100644
--- a/Source/SwiftLintFramework/Rules/AttributesRule.swift
+++ b/Source/SwiftLintFramework/Rules/AttributesRule.swift
@@ -258,15 +258,14 @@ public struct AttributesRule: ASTRule, OptInRule, ConfigurationProviderRule {
         let restOfLineOffset = attributeRange.location + attributeRange.length
         let restOfLineLength = line.byteRange.location + line.byteRange.length - restOfLineOffset
 
-        let range = NSRange(location: 0, length: restOfLineLength)
         let regex = AttributesRule.regularExpression
         let contents = file.contents.bridge()
 
         // check if after the token is a `(` with only spaces allowed between the token and `(`
         guard let restOfLine = contents.substringWithByteRange(start: restOfLineOffset,
                                                                length: restOfLineLength),
+            case let range = NSRange(location: 0, length: restOfLine.bridge().length),
             regex.firstMatch(in: restOfLine, options: [], range: range) != nil else {
-
             return false
         }
 
diff --git a/Source/SwiftLintFramework/Rules/AttributesRulesExamples.swift b/Source/SwiftLintFramework/Rules/AttributesRulesExamples.swift
index 9fcb07b..2fba66a 100644
--- a/Source/SwiftLintFramework/Rules/AttributesRulesExamples.swift
+++ b/Source/SwiftLintFramework/Rules/AttributesRulesExamples.swift
@@ -35,6 +35,7 @@ internal struct AttributesRuleExamples {
         "@objc(ABCThing)\n @available(iOS 9.0, *)\n class Thing",
         "class Foo: NSObject {\n override var description: String { return \"\" }\n}",
         "class Foo: NSObject {\n\n override func setUp() {}\n}",
+        "@objc\nclass ⽺ {}\n",
 
         // attribute with allowed empty new line above
         "extension Property {\n\n @available(*, unavailable, renamed: \"isOptional\")\n" +