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      1 ; REQUIRES: object-emission
      2 
      3 ; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=All < %s | llvm-dwarfdump - | FileCheck %s
      4 ; CHECK: debug_info contents
      5 ; CHECK: [[NS1:0x[0-9a-f]*]]:{{ *}}DW_TAG_namespace
      6 ; CHECK-NEXT: DW_AT_name{{.*}} = "A"
      7 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F1:".*debug-info-namespace.cpp"]])
      8 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(5)
      9 ; CHECK-NOT: NULL
     10 ; CHECK: [[NS2:0x[0-9a-f]*]]:{{ *}}DW_TAG_namespace
     11 ; CHECK-NEXT: DW_AT_name{{.*}} = "B"
     12 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2:".*foo.cpp"]])
     13 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(1)
     14 ; CHECK-NOT: NULL
     15 ; CHECK: [[I:0x[0-9a-f]*]]:{{ *}}DW_TAG_variable
     16 ; CHECK-NEXT: DW_AT_name{{.*}}= "i"
     17 ; CHECK: [[VAR_FWD:0x[0-9a-f]*]]:{{ *}}DW_TAG_variable
     18 ; CHECK-NEXT: DW_AT_name{{.*}}= "var_fwd"
     19 ; CHECK-NOT: NULL
     20 ; CHECK: [[FOO:0x[0-9a-f]*]]:{{ *}}DW_TAG_structure_type
     21 ; CHECK-NEXT: DW_AT_name{{.*}}= "foo"
     22 ; CHECK-NEXT: DW_AT_declaration
     23 ; CHECK-NOT: NULL
     24 ; CHECK: [[BAR:0x[0-9a-f]*]]:{{ *}}DW_TAG_structure_type
     25 ; CHECK-NEXT: DW_AT_name{{.*}}= "bar"
     26 ; CHECK: [[FUNC1:.*]]: DW_TAG_subprogram
     27 ; CHECK-NOT: DW_TAG
     28 ; CHECK: DW_AT_MIPS_linkage_name
     29 ; CHECK-NOT: DW_TAG
     30 ; CHECK: DW_AT_name{{.*}}= "f1"
     31 ; CHECK: [[BAZ:0x[0-9a-f]*]]:{{.*}}DW_TAG_typedef
     32 ; CHECK-NOT: DW_TAG
     33 ; CHECK: DW_AT_name{{.*}}= "baz"
     34 ; CHECK: [[VAR_DECL:0x[0-9a-f]*]]:{{.*}}DW_TAG_variable
     35 ; CHECK-NOT: DW_TAG
     36 ; CHECK: DW_AT_name{{.*}}= "var_decl"
     37 ; CHECK-NOT: DW_TAG
     38 ; CHECK: DW_AT_declaration
     39 ; CHECK: [[FUNC_DECL:0x[0-9a-f]*]]:{{.*}}DW_TAG_subprogram
     40 ; CHECK-NOT: DW_TAG
     41 ; CHECK: DW_AT_name{{.*}}= "func_decl"
     42 ; CHECK-NOT: DW_TAG
     43 ; CHECK: DW_AT_declaration
     44 ; CHECK: [[FUNC_FWD:0x[0-9a-f]*]]:{{.*}}DW_TAG_subprogram
     45 ; CHECK-NOT: DW_TAG
     46 ; CHECK: DW_AT_name{{.*}}= "func_fwd"
     47 ; CHECK-NOT: DW_AT_declaration
     48 ; CHECK: DW_TAG_subprogram
     49 ; CHECK-NOT: DW_TAG
     50 ; CHECK: DW_AT_MIPS_linkage_name
     51 ; CHECK-NOT: DW_TAG
     52 ; CHECK: DW_AT_name{{.*}}= "f1"
     53 ; CHECK: NULL
     54 
     55 ; CHECK-NOT: NULL
     56 ; CHECK: DW_TAG_imported_module
     57 ; This is a bug, it should be in F2 but it inherits the file from its
     58 ; enclosing scope
     59 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F1]])
     60 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(15)
     61 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS2]]})
     62 ; CHECK: NULL
     63 ; CHECK-NOT: NULL
     64 
     65 ; CHECK: DW_TAG_imported_module
     66 ; Same bug as above, this should be F2, not F1
     67 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F1]])
     68 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(18)
     69 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
     70 ; CHECK-NOT: NULL
     71 
     72 ; CHECK: DW_TAG_subprogram
     73 ; CHECK-NOT: DW_TAG
     74 ; CHECK: DW_AT_MIPS_linkage_name
     75 ; CHECK-NOT: DW_TAG
     76 ; CHECK: DW_AT_name{{.*}}= "func"
     77 ; CHECK-NOT: NULL
     78 ; CHECK: DW_TAG_imported_module
     79 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
     80 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(26)
     81 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
     82 ; CHECK-NOT: NULL
     83 ; CHECK: DW_TAG_imported_declaration
     84 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
     85 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(27)
     86 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FOO]]})
     87 ; CHECK-NOT: NULL
     88 ; CHECK: DW_TAG_imported_declaration
     89 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
     90 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(28)
     91 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[BAR]]})
     92 ; CHECK-NOT: NULL
     93 ; CHECK: DW_TAG_imported_declaration
     94 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
     95 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(29)
     96 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC1]]})
     97 ; CHECK-NOT: NULL
     98 ; CHECK: DW_TAG_imported_declaration
     99 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    100 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(30)
    101 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[I]]})
    102 ; CHECK-NOT: NULL
    103 ; CHECK: DW_TAG_imported_declaration
    104 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    105 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(31)
    106 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[BAZ]]})
    107 ; CHECK-NOT: NULL
    108 ; CHECK: [[X:0x[0-9a-f]*]]:{{ *}}DW_TAG_imported_declaration
    109 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    110 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(32)
    111 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
    112 ; CHECK-NEXT: DW_AT_name{{.*}}"X"
    113 ; CHECK-NOT: NULL
    114 ; CHECK: DW_TAG_imported_declaration
    115 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    116 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(33)
    117 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[X]]})
    118 ; CHECK-NEXT: DW_AT_name{{.*}}"Y"
    119 ; CHECK-NOT: NULL
    120 ; CHECK: DW_TAG_imported_declaration
    121 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    122 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(34)
    123 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[VAR_DECL]]})
    124 ; CHECK: DW_TAG_imported_declaration
    125 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    126 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(35)
    127 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC_DECL]]})
    128 ; CHECK: DW_TAG_imported_declaration
    129 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    130 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(36)
    131 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[VAR_FWD]]})
    132 ; CHECK: DW_TAG_imported_declaration
    133 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    134 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(37)
    135 ; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC_FWD]]})
    136 
    137 ; CHECK: DW_TAG_lexical_block
    138 ; CHECK-NOT: NULL
    139 ; CHECK: DW_TAG_imported_module
    140 ; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
    141 ; CHECK-NEXT: DW_AT_decl_line{{.*}}(23)
    142 ; CHECK-NEXT: DW_AT_import{{.*}}=>
    143 ; CHECK: NULL
    144 ; CHECK: NULL
    145 ; CHECK: NULL
    146 
    147 ; IR generated from clang/test/CodeGenCXX/debug-info-namespace.cpp, file paths
    148 ; changed to protect the guilty. The C++ source code is:
    149 ; // RUN...
    150 ; // RUN...
    151 ; // RUN...
    152 ;
    153 ; namespace A {
    154 ; #line 1 "foo.cpp"
    155 ; namespace B {
    156 ; extern int i;
    157 ; int f1() { return 0; }
    158 ; void f1(int) { }
    159 ; struct foo;
    160 ; struct bar { };
    161 ; typedef bar baz;
    162 ; extern int var_decl;
    163 ; void func_decl(void);
    164 ; extern int var_fwd;
    165 ; void func_fwd(void);
    166 ; }
    167 ; }
    168 ; namespace A {
    169 ; using namespace B;
    170 ; }
    171 ;
    172 ; using namespace A;
    173 ; namespace E = A;
    174 ; int B::i = f1();
    175 ; int func(bool b) {
    176 ;   if (b) {
    177 ;     using namespace A::B;
    178 ;     return i;
    179 ;   }
    180 ;   using namespace A;
    181 ;   using B::foo;
    182 ;   using B::bar;
    183 ;   using B::f1;
    184 ;   using B::i;
    185 ;   using B::baz;
    186 ;   namespace X = A;
    187 ;   namespace Y = X;
    188 ;   using B::var_decl;
    189 ;   using B::func_decl;
    190 ;   using B::var_fwd;
    191 ;   using B::func_fwd;
    192 ;   return i + X::B::i + Y::B::i;
    193 ; }
    194 ;
    195 ; namespace A {
    196 ; using B::i;
    197 ; namespace B {
    198 ; int var_fwd = i;
    199 ; }
    200 ; }
    201 ; void B::func_fwd() {}
    202 
    203 @_ZN1A1B1iE = global i32 0, align 4
    204 @_ZN1A1B7var_fwdE = global i32 0, align 4
    205 @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_debug_info_namespace.cpp, i8* null }]
    206 
    207 ; Function Attrs: nounwind ssp uwtable
    208 define i32 @_ZN1A1B2f1Ev() #0 !dbg !10 {
    209 entry:
    210   ret i32 0, !dbg !60
    211 }
    212 
    213 ; Function Attrs: nounwind ssp uwtable
    214 define void @_ZN1A1B2f1Ei(i32) #0 !dbg !14 {
    215 entry:
    216   %.addr = alloca i32, align 4
    217   store i32 %0, i32* %.addr, align 4
    218   call void @llvm.dbg.declare(metadata i32* %.addr, metadata !61, metadata !62), !dbg !63
    219   ret void, !dbg !64
    220 }
    221 
    222 ; Function Attrs: nounwind readnone
    223 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
    224 
    225 define internal void @__cxx_global_var_init() section "__TEXT,__StaticInit,regular,pure_instructions" !dbg !17 {
    226 entry:
    227   %call = call i32 @_ZN1A1B2f1Ev(), !dbg !65
    228   store i32 %call, i32* @_ZN1A1B1iE, align 4, !dbg !65
    229   ret void, !dbg !65
    230 }
    231 
    232 ; Function Attrs: nounwind ssp uwtable
    233 define i32 @_Z4funcb(i1 zeroext %b) #0 !dbg !21 {
    234 entry:
    235   %retval = alloca i32, align 4
    236   %b.addr = alloca i8, align 1
    237   %frombool = zext i1 %b to i8
    238   store i8 %frombool, i8* %b.addr, align 1
    239   call void @llvm.dbg.declare(metadata i8* %b.addr, metadata !66, metadata !62), !dbg !67
    240   %0 = load i8, i8* %b.addr, align 1, !dbg !68
    241   %tobool = trunc i8 %0 to i1, !dbg !68
    242   br i1 %tobool, label %if.then, label %if.end, !dbg !68
    243 
    244 if.then:                                          ; preds = %entry
    245   %1 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !69
    246   store i32 %1, i32* %retval, !dbg !69
    247   br label %return, !dbg !69
    248 
    249 if.end:                                           ; preds = %entry
    250   %2 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
    251   %3 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
    252   %add = add nsw i32 %2, %3, !dbg !70
    253   %4 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
    254   %add1 = add nsw i32 %add, %4, !dbg !70
    255   store i32 %add1, i32* %retval, !dbg !70
    256   br label %return, !dbg !70
    257 
    258 return:                                           ; preds = %if.end, %if.then
    259   %5 = load i32, i32* %retval, !dbg !71
    260   ret i32 %5, !dbg !71
    261 }
    262 
    263 define internal void @__cxx_global_var_init1() section "__TEXT,__StaticInit,regular,pure_instructions" !dbg !25 {
    264 entry:
    265   %0 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !72
    266   store i32 %0, i32* @_ZN1A1B7var_fwdE, align 4, !dbg !72
    267   ret void, !dbg !72
    268 }
    269 
    270 ; Function Attrs: nounwind ssp uwtable
    271 define void @_ZN1A1B8func_fwdEv() #0 !dbg !26 {
    272 entry:
    273   ret void, !dbg !73
    274 }
    275 
    276 define internal void @_GLOBAL__sub_I_debug_info_namespace.cpp() section "__TEXT,__StaticInit,regular,pure_instructions" {
    277 entry:
    278   call void @__cxx_global_var_init(), !dbg !74
    279   call void @__cxx_global_var_init1(), !dbg !74
    280   ret void, !dbg !74
    281 }
    282 
    283 attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
    284 attributes #1 = { nounwind readnone }
    285 
    286 !llvm.dbg.cu = !{!0}
    287 !llvm.module.flags = !{!57, !58}
    288 !llvm.ident = !{!59}
    289 
    290 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !30, imports: !33)
    291 !1 = !DIFile(filename: "debug-info-namespace.cpp", directory: "/tmp")
    292 !2 = !{}
    293 !3 = !{!4, !8}
    294 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 5, flags: DIFlagFwdDecl, file: !5, scope: !6, identifier: "_ZTSN1A1B3fooE")
    295 !5 = !DIFile(filename: "foo.cpp", directory: "/tmp")
    296 !6 = !DINamespace(name: "B", line: 1, file: !5, scope: !7)
    297 !7 = !DINamespace(name: "A", line: 5, file: !1, scope: null)
    298 !8 = !DICompositeType(tag: DW_TAG_structure_type, name: "bar", line: 6, size: 8, align: 8, file: !5, scope: !6, elements: !2, identifier: "_ZTSN1A1B3barE")
    299 !10 = distinct !DISubprogram(name: "f1", linkageName: "_ZN1A1B2f1Ev", line: 3, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !5, scope: !6, type: !11, variables: !2)
    300 !11 = !DISubroutineType(types: !12)
    301 !12 = !{!13}
    302 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
    303 !14 = distinct !DISubprogram(name: "f1", linkageName: "_ZN1A1B2f1Ei", line: 4, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !5, scope: !6, type: !15, variables: !2)
    304 !15 = !DISubroutineType(types: !16)
    305 !16 = !{null, !13}
    306 !17 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 20, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 20, file: !5, scope: !18, type: !19, variables: !2)
    307 !18 = !DIFile(filename: "foo.cpp", directory: "/tmp")
    308 !19 = !DISubroutineType(types: !20)
    309 !20 = !{null}
    310 !21 = distinct !DISubprogram(name: "func", linkageName: "_Z4funcb", line: 21, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 21, file: !5, scope: !18, type: !22, variables: !2)
    311 !22 = !DISubroutineType(types: !23)
    312 !23 = !{!13, !24}
    313 !24 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
    314 !25 = distinct !DISubprogram(name: "__cxx_global_var_init1", line: 44, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 44, file: !5, scope: !18, type: !19, variables: !2)
    315 !26 = distinct !DISubprogram(name: "func_fwd", linkageName: "_ZN1A1B8func_fwdEv", line: 47, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 47, file: !5, scope: !6, type: !19, variables: !2)
    316 !27 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_debug_info_namespace.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !28, type: !29, variables: !2)
    317 !28 = !DIFile(filename: "debug-info-namespace.cpp", directory: "/tmp")
    318 !29 = !DISubroutineType(types: !2)
    319 !30 = !{!31, !32}
    320 !31 = !DIGlobalVariable(name: "i", linkageName: "_ZN1A1B1iE", line: 20, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13, variable: i32* @_ZN1A1B1iE)
    321 !32 = !DIGlobalVariable(name: "var_fwd", linkageName: "_ZN1A1B7var_fwdE", line: 44, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13, variable: i32* @_ZN1A1B7var_fwdE)
    322 !33 = !{!34, !35, !36, !37, !40, !41, !42, !43, !44, !45, !47, !48, !49, !51, !54, !55, !56}
    323 !34 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 15, scope: !7, entity: !6)
    324 !35 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 18, scope: !0, entity: !7)
    325 !36 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 19, name: "E", scope: !0, entity: !7)
    326 !37 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 23, scope: !38, entity: !6)
    327 !38 = distinct !DILexicalBlock(line: 22, column: 10, file: !5, scope: !39)
    328 !39 = distinct !DILexicalBlock(line: 22, column: 7, file: !5, scope: !21)
    329 !40 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 26, scope: !21, entity: !7)
    330 !41 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 27, scope: !21, entity: !4)
    331 !42 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 28, scope: !21, entity: !8)
    332 !43 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 29, scope: !21, entity: !14)
    333 !44 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 30, scope: !21, entity: !31)
    334 !45 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 31, scope: !21, entity: !46)
    335 !46 = !DIDerivedType(tag: DW_TAG_typedef, name: "baz", line: 7, file: !5, scope: !6, baseType: !8)
    336 !47 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 32, name: "X", scope: !21, entity: !7)
    337 !48 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 33, name: "Y", scope: !21, entity: !47)
    338 !49 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 34, scope: !21, entity: !50)
    339 !50 = !DIGlobalVariable(name: "var_decl", linkageName: "_ZN1A1B8var_declE", line: 8, isLocal: false, isDefinition: false, scope: !6, file: !18, type: !13)
    340 !51 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 35, scope: !21, entity: !52)
    341 !52 = !DISubprogram(name: "func_decl", linkageName: "_ZN1A1B9func_declEv", line: 9, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, file: !5, scope: !6, type: !19, variables: !53)
    342 !53 = !{} ; previously: invalid DW_TAG_base_type
    343 !54 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 36, scope: !21, entity: !32)
    344 !55 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 37, scope: !21, entity: !26)
    345 !56 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 42, scope: !7, entity: !31)
    346 !57 = !{i32 2, !"Dwarf Version", i32 2}
    347 !58 = !{i32 2, !"Debug Info Version", i32 3}
    348 !59 = !{!"clang version 3.6.0 "}
    349 !60 = !DILocation(line: 3, column: 12, scope: !10)
    350 !61 = !DILocalVariable(name: "", line: 4, arg: 1, scope: !14, file: !18, type: !13)
    351 !62 = !DIExpression()
    352 !63 = !DILocation(line: 4, column: 12, scope: !14)
    353 !64 = !DILocation(line: 4, column: 16, scope: !14)
    354 !65 = !DILocation(line: 20, column: 12, scope: !17)
    355 !66 = !DILocalVariable(name: "b", line: 21, arg: 1, scope: !21, file: !18, type: !24)
    356 !67 = !DILocation(line: 21, column: 15, scope: !21)
    357 !68 = !DILocation(line: 22, column: 7, scope: !21)
    358 !69 = !DILocation(line: 24, column: 5, scope: !38)
    359 !70 = !DILocation(line: 38, column: 3, scope: !21)
    360 !71 = !DILocation(line: 39, column: 1, scope: !21)
    361 !72 = !DILocation(line: 44, column: 15, scope: !25)
    362 !73 = !DILocation(line: 47, column: 21, scope: !26)
    363 !74 = !DILocation(line: 0, scope: !75)
    364 !75 = !DILexicalBlockFile(discriminator: 0, file: !5, scope: !27)
    365