Tom de Vries a50faaf620 [gdb/testsuite] Add XFAILs in gdb.rust/simple.exp for incorrect DWARF ... On openSUSE Leap 15.1 using rustc version 1.36.0 (using llvm 7), I get: ... (gdb) PASS: gdb.rust/simple.exp: print e2.0 print k^M $54 = simple::SpaceSaver::Thebox(40, 0x0)^M (gdb) FAIL: gdb.rust/simple.exp: print k ... while we're expecting: ... gdb_test "print k" " = simple::SpaceSaver::Nothing" ... When using a relatively recent version of Rust with a somewhat older version of LLVM, the Rust compiler will emit a legacy encoding of enums (see also quirk_rust_enum in dwarf2read.c). So, the variable k: ... <17><3d58>: Abbrev Number: 15 (DW_TAG_variable) <3d59> DW_AT_location : 3 byte block: 91 b8 4 (DW_OP_fbreg: 568) <3d5d> DW_AT_name : (indirect string, offset: 0xf9a): k <3d61> DW_AT_alignment : 1 <3d62> DW_AT_decl_file : 1 <3d63> DW_AT_decl_line : 129 <3d64> DW_AT_type : <0x4232> ... has type: ... <2><4232>: Abbrev Number: 11 (DW_TAG_union_type) <4233> DW_AT_name : (indirect string, offset: 0x3037): SpaceSaver <4237> DW_AT_byte_size : 16 <4238> DW_AT_alignment : 8 <3><4239>: Abbrev Number: 9 (DW_TAG_member) <423a> DW_AT_name : (indirect string, offset: 0x29f5): RUST$ENCODED$ENUM$0$Nothing <423e> DW_AT_type : <0x4245> <4242> DW_AT_alignment : 8 <4243> DW_AT_data_member_location: 0 ... The "RUST$ENCODED$ENUM$0$Nothing" means that field 0 is both a pointer and a discriminant, and if the value is 0, then the enum is just a data-less variant named "Nothing". However, the corresponding type has two fields, where not field 0 but field 1 is a pointer, and field 0 is a byte: ... <2><4245>: Abbrev Number: 8 (DW_TAG_structure_type) <4246> DW_AT_name : (indirect string, offset: 0x2a11): Thebox <424a> DW_AT_byte_size : 16 <424b> DW_AT_alignment : 8 <3><424c>: Abbrev Number: 9 (DW_TAG_member) <424d> DW_AT_name : (indirect string, offset: 0x670): __0 <4251> DW_AT_type : <0x436b> <4255> DW_AT_alignment : 1 <4256> DW_AT_data_member_location: 8 <3><4257>: Abbrev Number: 9 (DW_TAG_member) <4258> DW_AT_name : (indirect string, offset: 0x1662): __1 <425c> DW_AT_type : <0x45da> <4260> DW_AT_alignment : 8 <4261> DW_AT_data_member_location: 0 ... Mark this as xfail. gdb/testsuite/ChangeLog: 2019-10-09 Tom de Vries <tdevries@suse.de> PR testsuite/25048 * gdb.rust/simple.exp: Add xfails for incorrect DWARF.		2019-10-09 23:57:11 +02:00
..
expr.exp
generics.exp
generics.rs
methods.exp
methods.rs
modules.exp
modules.rs
simple.exp	[gdb/testsuite] Add XFAILs in gdb.rust/simple.exp for incorrect DWARF	2019-10-09 23:57:11 +02:00
simple.rs
traits.exp
traits.rs
unsized.exp
unsized.rs
watch.exp
watch.rs