[SR-2273] Struct fields are not represented in Swift 3.0 DSYM. #44880
Labels
bug
A deviation from expected or documented behavior. Also: expected but undesirable behavior.
compiler
The Swift compiler in itself
debug info
Area → compiler → IRGen: Debug information emission
Comments
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I'm not sure what good the field information would do for you because Swift's calling convention isn't the same as C's. |
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Comment by David Elkind (JIRA) That's something I already took care of. I realize this might also be changed in Swift 3.0, but I can take care of it too. |
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I think this relates to struct ABI, if not please correct. Also, if this is resolved, it should be marked as such. |
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cc @adrian-prantl, when he gets back. This gets a lot more complicated with resilient structs, too. |
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Is this with |
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Additional Detail from JIRA
md5: 60b56867bc7972257aa0b3c9479e1e9e
relates to:
Issue Description:
There is no field information in the struct information in DSYM, just property methods and total struct size. Field information is necessary for deducing struct layout when it is passed as a function parameter in register(s).
Using one of the property methods (for instance, get()) seems problematic because of computed properties.
Example:
Code
struct TestStruct31 {
var float0: Float = 0;
var double1: Double = 1;
}
Dwarfdump output:
0x0001d442: TAG_structure_type [4] *
AT_name( "TestStruct31" )
AT_linkage_name( "_TtV8SwiftApp12TestStruct31" )
AT_byte_size( 0x10 )
AT_decl_line( 4 )
AT_APPLE_runtime_class( 0x1e )
0x0001d44f: TAG_subprogram [5] *
AT_low_pc( 0x00166d50 )
AT_high_pc( 0x00166d74 )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "_TFV8SwiftApp12TestStruct31g6float0Sf" )
AT_name( "float0.get" )
AT_decl_line( 5 )
AT_type( {0x0001f32b} ( Float ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d46a: TAG_formal_parameter [6]
AT_location( sp+0 )
AT_name( "self" )
AT_decl_line( 5 )
AT_type( {0x0001d442} ( TestStruct31 ) )
AT_artificial( 0x01 )
0x0001d479: NULL
0x0001d47a: TAG_subprogram [5] *
AT_low_pc( 0x00166d74 )
AT_high_pc( 0x00166d94 )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "_TFV8SwiftApp12TestStruct31s6float0Sf" )
AT_name( "float0.set" )
AT_decl_line( 5 )
AT_type( {0x0001f383} ( TtT ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d495: TAG_formal_parameter [7]
AT_location( sp+0 )
AT_name( "value" )
AT_decl_line( 5 )
AT_type( {0x0001f32b} ( Float ) )
0x0001d4a3: TAG_formal_parameter [6]
AT_location( sp+4 )
AT_name( "self" )
AT_decl_line( 5 )
AT_type( {0x0001f3a3} ( _TtRV8SwiftApp12TestStruct31 ) )
AT_artificial( 0x01 )
0x0001d4b2: NULL
0x0001d4b3: TAG_subprogram [8]
AT_low_pc( 0x00166d94 )
AT_high_pc( 0x00166db4 )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "_TFV8SwiftApp12TestStruct31m6float0Sf" )
AT_name( "float0.materialize" )
AT_type( {0x0001f38e} ( TtTBpGSqBp_ ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d4cc: TAG_subprogram [5] *
AT_low_pc( 0x00166db4 )
AT_high_pc( 0x00166dd8 )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "_TFV8SwiftApp12TestStruct31g7double1Sd" )
AT_name( "double1.get" )
AT_decl_line( 6 )
AT_type( {0x0001f336} ( Double ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d4e7: TAG_formal_parameter [6]
AT_location( sp+0 )
AT_name( "self" )
AT_decl_line( 6 )
AT_type( {0x0001d442} ( TestStruct31 ) )
AT_artificial( 0x01 )
0x0001d4f6: NULL
0x0001d4f7: TAG_subprogram [5] *
AT_low_pc( 0x00166dd8 )
AT_high_pc( 0x00166e04 )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "_TFV8SwiftApp12TestStruct31s7double1Sd" )
AT_name( "double1.set" )
AT_decl_line( 6 )
AT_type( {0x0001f383} ( TtT ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d512: TAG_formal_parameter [7]
AT_location( sp+0 )
AT_name( "value" )
AT_decl_line( 6 )
AT_type( {0x0001f336} ( Double ) )
0x0001d520: TAG_formal_parameter [6]
AT_location( sp+8 )
AT_name( "self" )
AT_decl_line( 6 )
AT_type( {0x0001f3a3} ( _TtRV8SwiftApp12TestStruct31 ) )
AT_artificial( 0x01 )
0x0001d52f: NULL
0x0001d530: TAG_subprogram [8]
AT_low_pc( 0x00166e04 )
AT_high_pc( 0x00166e28 )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "_TFV8SwiftApp12TestStruct31m7double1Sd" )
AT_name( "double1.materialize" )
AT_type( {0x0001f38e} ( TtTBpGSqBp_ ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d549: TAG_subprogram [9]
AT_low_pc( 0x00166e28 )
AT_high_pc( 0x00166e40 )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "TFV8SwiftApp12TestStruct31CfT6float0Sf7double1Sd_S0" )
AT_name( "init" )
AT_decl_line( 4 )
AT_type( {0x0001d442} ( TestStruct31 ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d564: TAG_subprogram [5] *
AT_low_pc( 0x00166e40 )
AT_high_pc( 0x00166e7c )
AT_frame_base( r7 )
AT_MIPS_linkage_name( "TFV8SwiftApp12TestStruct31CfT_S0" )
AT_name( "init" )
AT_decl_line( 4 )
AT_type( {0x0001d442} ( TestStruct31 ) )
AT_external( 0x01 )
AT_APPLE_isa( 0x02 )
0x0001d57f: TAG_formal_parameter [6]
AT_location( sp+0 )
AT_name( "self" )
AT_decl_line( 4 )
AT_type( {0x0001d442} ( TestStruct31 ) )
AT_artificial( 0x01 )
0x0001d58e: NULL
0x0001d58f: NULL
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