[llvm] r307872 - [DWARF] Fixing a bug with processing of DWARF v5 indexed strings in Mach-O objects.
Wolfgang Pieb via llvm-commits
llvm-commits at lists.llvm.org
Wed Jul 12 18:03:28 PDT 2017
Author: wolfgangp
Date: Wed Jul 12 18:03:28 2017
New Revision: 307872
URL: http://llvm.org/viewvc/llvm-project?rev=307872&view=rev
Log:
[DWARF] Fixing a bug with processing of DWARF v5 indexed strings in Mach-O objects.
Code to convert MachO - specific section debug section names to standard DWARF v5
section names was in the wrong place.
Differential Revision: https://reviews.llvm.org/D35321
Added:
llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.o (with props)
llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.s
Modified:
llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp
llvm/trunk/test/DebugInfo/dwarfdump-str-offsets.test
Modified: llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp?rev=307872&r1=307871&r2=307872&view=diff
==============================================================================
--- llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp (original)
+++ llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp Wed Jul 12 18:03:28 2017
@@ -964,6 +964,10 @@ DWARFContextInMemory::DWARFContextInMemo
Name = Name.substr(
Name.find_first_not_of("._z")); // Skip ".", "z" and "_" prefixes.
+ // Map platform specific debug section names to DWARF standard section
+ // names.
+ Name = Obj.mapDebugSectionName(Name);
+
if (StringRef *SectionData = mapSectionToMember(Name)) {
*SectionData = Data;
if (Name == "debug_ranges") {
@@ -978,10 +982,6 @@ DWARFContextInMemory::DWARFContextInMemo
TypesDWOSections[Section].Data = Data;
}
- // Map platform specific debug section names to DWARF standard section
- // names.
- Name = Obj.mapDebugSectionName(Name);
-
if (RelocatedSection == Obj.section_end())
continue;
Added: llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.o
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.o?rev=307872&view=auto
==============================================================================
Binary file - no diff available.
Propchange: llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.o
------------------------------------------------------------------------------
svn:mime-type = application/octet-stream
Added: llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.s?rev=307872&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.s (added)
+++ llvm/trunk/test/DebugInfo/Inputs/dwarfdump-str-offsets-macho.s Wed Jul 12 18:03:28 2017
@@ -0,0 +1,201 @@
+# Test object to verify dwarfdump handles v5 string offset tables in Mach-O.
+# This is similar to dwarfdump-str-offsets.s with 2 CUs and 1 TU, but no
+# split sections.
+#
+# To generate the test object:
+# llvm-mc -triple i386-apple-darwin9 dwarfdump-str-offsets-macho.s -filetype=obj \
+# -o dwarfdump-str-offsets-macho.o
+
+ .section __DWARF,__debug_str,regular,debug
+Linfo_string:
+ .asciz "Handmade DWARF producer"
+str_CU1:
+ .asciz "Compile_Unit_1"
+str_CU1_dir:
+ .asciz "/home/test/CU1"
+str_CU2:
+ .asciz "Compile_Unit_2"
+str_CU2_dir:
+ .asciz "/home/test/CU2"
+str_TU:
+ .asciz "Type_Unit"
+str_TU_type:
+ .asciz "MyStruct"
+str_Subprogram:
+ .asciz "MyFunc"
+str_Variable1:
+ .asciz "MyVar1"
+str_Variable2:
+ .asciz "MyVar2"
+str_Variable3:
+ .asciz "MyVar3"
+
+ .section __DWARF,__debug_str_offs,regular,debug
+Ldebug_str_offsets:
+ .long Ldebug_str_offsets_segment0_end-Ldebug_str_offsets_base0
+ .short 5 # DWARF version
+ .short 0 # Padding
+Ldebug_str_offsets_base0:
+ .long str_producer
+ .long str_CU1
+ .long str_CU1_dir
+ .long str_Subprogram
+ .long str_Variable1
+ .long str_Variable2
+ .long str_Variable3
+Ldebug_str_offsets_segment0_end:
+# CU2's contribution
+ .long Ldebug_str_offsets_segment1_end-Ldebug_str_offsets_base1
+ .short 5 # DWARF version
+ .short 0 # Padding
+Ldebug_str_offsets_base1:
+ .long str_producer
+ .long str_CU2
+ .long str_CU2_dir
+Ldebug_str_offsets_segment1_end:
+# The TU's contribution
+ .long Ldebug_str_offsets_segment2_end-Ldebug_str_offsets_base2
+ .short 5 # DWARF version
+ .short 0 # Padding
+Ldebug_str_offsets_base2:
+ .long str_TU
+ .long str_TU_type
+Ldebug_str_offsets_segment2_end:
+
+ .section __DWARF,__debug_abbrev,regular,debug
+Lsection_abbrev:
+ .byte 0x01 # Abbrev code
+ .byte 0x11 # DW_TAG_compile_unit
+ .byte 0x01 # DW_CHILDREN_yes
+ .byte 0x25 # DW_AT_producer
+ .byte 0x1a # DW_FORM_strx
+ .byte 0x03 # DW_AT_name
+ .byte 0x1a # DW_FORM_strx
+ .byte 0x72 # DW_AT_str_offsets_base
+ .byte 0x17 # DW_FORM_sec_offset
+ .byte 0x1b # DW_AT_comp_dir
+ .byte 0x1a # DW_FORM_strx
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x02 # Abbrev code
+ .byte 0x41 # DW_TAG_type_unit
+ .byte 0x01 # DW_CHILDREN_yes
+ .byte 0x03 # DW_AT_name
+ .byte 0x1a # DW_FORM_strx
+ .byte 0x72 # DW_AT_str_offsets_base
+ .byte 0x17 # DW_FORM_sec_offset
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x03 # Abbrev code
+ .byte 0x13 # DW_TAG_structure_type
+ .byte 0x00 # DW_CHILDREN_no (no members)
+ .byte 0x03 # DW_AT_name
+ .byte 0x1a # DW_FORM_strx
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x04 # Abbrev code
+ .byte 0x2e # DW_TAG_subprogram
+ .byte 0x01 # DW_CHILDREN_yes
+ .byte 0x03 # DW_AT_name
+ .byte 0x25 # DW_FORM_strx1
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x05 # Abbrev code
+ .byte 0x34 # DW_TAG_variable
+ .byte 0x00 # DW_CHILDREN_no
+ .byte 0x03 # DW_AT_name
+ .byte 0x26 # DW_FORM_strx2
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x06 # Abbrev code
+ .byte 0x34 # DW_TAG_variable
+ .byte 0x00 # DW_CHILDREN_no
+ .byte 0x03 # DW_AT_name
+ .byte 0x27 # DW_FORM_strx3
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x07 # Abbrev code
+ .byte 0x34 # DW_TAG_variable
+ .byte 0x00 # DW_CHILDREN_no
+ .byte 0x03 # DW_AT_name
+ .byte 0x28 # DW_FORM_strx4
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x00 # EOM(3)
+
+ .section __DWARF,__debug_info,regular,debug
+Lsection_info:
+# DWARF v5 CU header.
+ .long CU1_5_end-CU1_5_version # Length of Unit
+CU1_5_version:
+ .short 5 # DWARF version number
+ .byte 1 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long 0 # Offset Into Abbrev. Section
+# The compile-unit DIE, which has a DW_AT_producer, DW_AT_name,
+# DW_AT_str_offsets and DW_AT_compdir.
+ .byte 1 # Abbreviation code
+ .byte 0 # The index of the producer string
+ .byte 1 # The index of the CU name string
+ .long Ldebug_str_offsets_base0-Ldebug_str_offsets
+ .byte 2 # The index of the comp dir string
+# A subprogram DIE with DW_AT_name, using DW_FORM_strx1.
+ .byte 4 # Abbreviation code
+ .byte 3 # Subprogram name string (DW_FORM_strx1)
+# A variable DIE with DW_AT_name, using DW_FORM_strx2.
+ .byte 5 # Abbreviation code
+ .short 0x0004 # Subprogram name string (DW_FORM_strx2)
+# A variable DIE with DW_AT_name, using DW_FORM_strx3.
+ .byte 6 # Abbreviation code
+ .byte 5 # Subprogram name string (DW_FORM_strx3)
+ .short 0 # Subprogram name string (DW_FORM_strx3)
+# A variable DIE with DW_AT_name, using DW_FORM_strx4.
+ .byte 7 # Abbreviation code
+ .quad 0x00000006 # Subprogram name string (DW_FORM_strx4)
+ .byte 0 # NULL
+ .byte 0 # NULL
+ .byte 0 # NULL
+CU1_5_end:
+
+# DWARF v5 CU header
+ .long CU2_5_end-CU2_5_version # Length of Unit
+CU2_5_version:
+ .short 5 # DWARF version number
+ .byte 1 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long 0 # Offset Into Abbrev. Section
+# The compile-unit DIE, which has a DW_AT_producer, DW_AT_name,
+# DW_AT_str_offsets and DW_AT_compdir.
+ .byte 1 # Abbreviation code
+ .byte 0 # The index of the producer string
+ .byte 1 # The index of the CU name string
+ .long Ldebug_str_offsets_base1-Ldebug_str_offsets
+ .byte 2 # The index of the comp dir string
+ .byte 0 # NULL
+CU2_5_end:
+
+ .section __DWARF,__debug_types,regular,debug
+# DWARF v5 Type unit header.
+TU_5_start:
+ .long TU_5_end-TU_5_version # Length of Unit
+TU_5_version:
+ .short 5 # DWARF version number
+ .byte 2 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long 0 # Offset Into Abbrev. Section
+ .quad 0x0011223344556677 # Type Signature
+ .long TU_5_type-TU_5_start # Type offset
+# The type-unit DIE, which has a name.
+ .byte 2 # Abbreviation code
+ .byte 0 # Index of the unit type name string
+ .long Ldebug_str_offsets_base2-Ldebug_str_offsets # offset into the str_offsets section
+# The type DIE, which has a name.
+TU_5_type:
+ .byte 3 # Abbreviation code
+ .byte 1 # Index of the type name string
+ .byte 0 # NULL
+ .byte 0 # NULL
+TU_5_end:
+
+
+.subsections_via_symbols
Modified: llvm/trunk/test/DebugInfo/dwarfdump-str-offsets.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/dwarfdump-str-offsets.test?rev=307872&r1=307871&r2=307872&view=diff
==============================================================================
--- llvm/trunk/test/DebugInfo/dwarfdump-str-offsets.test (original)
+++ llvm/trunk/test/DebugInfo/dwarfdump-str-offsets.test Wed Jul 12 18:03:28 2017
@@ -1,92 +1,94 @@
-RUN: llvm-dwarfdump %p/Inputs/dwarfdump-str-offsets.x86_64.o | FileCheck %s
+RUN: llvm-dwarfdump %p/Inputs/dwarfdump-str-offsets.x86_64.o | FileCheck --check-prefix=COMMON \
+RUN: --check-prefix=SPLIT %s
+RUN: llvm-dwarfdump %p/Inputs/dwarfdump-str-offsets-macho.o | FileCheck --check-prefix=COMMON %s
; We are using a hand-constructed object file and are interest in the correct
; diplay of the DW_str_offsetsbase attribute, the correct display of strings
; and the dump of the .debug_str_offsets[.dwo] table.
;
; Abbreviation for DW_AT_str_offsets_base
-CHECK: .debug_abbrev contents:
-CHECK-NOT: contents:
-CHECK: DW_TAG_compile_unit
-CHECK-NOT: DW_TAG
-CHECK: DW_AT_str_offsets_base DW_FORM_sec_offset
+COMMON: .debug_abbrev contents:
+COMMON-NOT: contents:
+COMMON: DW_TAG_compile_unit
+COMMON-NOT: DW_TAG
+COMMON: DW_AT_str_offsets_base DW_FORM_sec_offset
; Verify that strings are displayed correctly as indexed strings
-CHECK: .debug_info contents:
-CHECK-NOT: contents:
-CHECK: DW_TAG_compile_unit
-CHECK-NEXT: DW_AT_producer [DW_FORM_strx] ( indexed (00000000) string = "Handmade DWARF producer")
-CHECK-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "Compile_Unit_1")
-CHECK-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)
-CHECK-NEXT: DW_AT_comp_dir [DW_FORM_strx] ( indexed (00000002) string = "/home/test/CU1")
-CHECK-NOT: NULL
-CHECK: DW_TAG_subprogram
-CHECK-NEXT: DW_AT_name [DW_FORM_strx1] ( indexed (00000003) string = "MyFunc")
-CHECK-NOT: NULL
-CHECK: DW_TAG_variable
-CHECK-NEXT: DW_AT_name [DW_FORM_strx2] ( indexed (00000004) string = "MyVar1")
-CHECK-NOT: NULL
-CHECK: DW_TAG_variable
-CHECK-NEXT: DW_AT_name [DW_FORM_strx3] ( indexed (00000005) string = "MyVar2")
-CHECK-NOT: NULL
-CHECK: DW_TAG_variable
-CHECK-NEXT: DW_AT_name [DW_FORM_strx4] ( indexed (00000006) string = "MyVar3")
+COMMON: .debug_info contents:
+COMMON-NOT: contents:
+COMMON: DW_TAG_compile_unit
+COMMON-NEXT: DW_AT_producer [DW_FORM_strx] ( indexed (00000000) string = "Handmade DWARF producer")
+COMMON-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "Compile_Unit_1")
+COMMON-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)
+COMMON-NEXT: DW_AT_comp_dir [DW_FORM_strx] ( indexed (00000002) string = "/home/test/CU1")
+COMMON-NOT: NULL
+COMMON: DW_TAG_subprogram
+COMMON-NEXT: DW_AT_name [DW_FORM_strx1] ( indexed (00000003) string = "MyFunc")
+COMMON-NOT: NULL
+COMMON: DW_TAG_variable
+COMMON-NEXT: DW_AT_name [DW_FORM_strx2] ( indexed (00000004) string = "MyVar1")
+COMMON-NOT: NULL
+COMMON: DW_TAG_variable
+COMMON-NEXT: DW_AT_name [DW_FORM_strx3] ( indexed (00000005) string = "MyVar2")
+COMMON-NOT: NULL
+COMMON: DW_TAG_variable
+COMMON-NEXT: DW_AT_name [DW_FORM_strx4] ( indexed (00000006) string = "MyVar3")
; Second compile unit (b.cpp)
-CHECK: DW_TAG_compile_unit
-CHECK-NEXT: DW_AT_producer [DW_FORM_strx] ( indexed (00000000) string = "Handmade DWARF producer")
-CHECK-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "Compile_Unit_2")
-CHECK-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x0000002c)
-CHECK-NEXT: DW_AT_comp_dir [DW_FORM_strx] ( indexed (00000002) string = "/home/test/CU2")
+COMMON: DW_TAG_compile_unit
+COMMON-NEXT: DW_AT_producer [DW_FORM_strx] ( indexed (00000000) string = "Handmade DWARF producer")
+COMMON-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "Compile_Unit_2")
+COMMON-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x0000002c)
+COMMON-NEXT: DW_AT_comp_dir [DW_FORM_strx] ( indexed (00000002) string = "/home/test/CU2")
; The split CU
-CHECK: .debug_info.dwo contents:
-CHECK-NOT: contents:
-CHECK: DW_TAG_compile_unit
-CHECK-NEXT: DW_AT_producer [DW_FORM_strx] ( indexed (00000000) string = "Handmade split DWARF producer")
-CHECK-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "V5_split_compile_unit")
-CHECK-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)
-CHECK-NEXT: DW_AT_comp_dir [DW_FORM_strx] ( indexed (00000002) string = "/home/test/splitCU")
+SPLIT: .debug_info.dwo contents:
+SPLIT-NOT: contents:
+SPLIT: DW_TAG_compile_unit
+SPLIT-NEXT: DW_AT_producer [DW_FORM_strx] ( indexed (00000000) string = "Handmade split DWARF producer")
+SPLIT-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "V5_split_compile_unit")
+SPLIT-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)
+SPLIT-NEXT: DW_AT_comp_dir [DW_FORM_strx] ( indexed (00000002) string = "/home/test/splitCU")
; The type unit
-CHECK: .debug_types contents:
-CHECK: DW_TAG_type_unit
-CHECK-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000000) string = "Type_Unit")
-CHECK-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000040)
-CHECK: DW_TAG_structure_type
-CHECK-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "MyStruct")
+COMMON: .debug_types contents:
+COMMON: DW_TAG_type_unit
+COMMON-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000000) string = "Type_Unit")
+COMMON-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000040)
+COMMON: DW_TAG_structure_type
+COMMON-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "MyStruct")
; The split type unit
-CHECK: .debug_types.dwo contents:
-CHECK: DW_TAG_type_unit
-CHECK-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000000) string = "V5_split_type_unit")
-CHECK-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x0000001c)
-CHECK: DW_TAG_structure_type
-CHECK-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "V5_split_Mystruct")
+SPLIT: .debug_types.dwo contents:
+SPLIT: DW_TAG_type_unit
+SPLIT-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000000) string = "V5_split_type_unit")
+SPLIT-NEXT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x0000001c)
+SPLIT: DW_TAG_structure_type
+SPLIT-NEXT: DW_AT_name [DW_FORM_strx] ( indexed (00000001) string = "V5_split_Mystruct")
; The .debug_str_offsets section
-CHECK: .debug_str_offsets contents:
-CHECK-NEXT: 0x00000000: Contribution size = 28, Version = 5
-CHECK-NEXT: 0x00000008: 00000000 "Handmade DWARF producer"
-CHECK-NEXT: 0x0000000c: 00000018 "Compile_Unit_1"
-CHECK-NEXT: 0x00000010: 00000027 "/home/test/CU1"
-CHECK-NEXT: 0x00000014: 00000067 "MyFunc"
-CHECK-NEXT: 0x00000018: 0000006e "MyVar1"
-CHECK-NEXT: 0x0000001c: 00000075 "MyVar2"
-CHECK-NEXT: 0x00000020: 0000007c "MyVar3"
-CHECK-NEXT: 0x00000024: Contribution size = 12, Version = 5
-CHECK-NEXT: 0x0000002c: 00000000 "Handmade DWARF producer"
-CHECK-NEXT: 0x00000030: 00000036 "Compile_Unit_2"
-CHECK-NEXT: 0x00000034: 00000045 "/home/test/CU2"
-CHECK-NEXT: 0x00000038: Contribution size = 8, Version = 5
-CHECK-NEXT: 0x00000040: 00000054 "Type_Unit"
-CHECK-NEXT: 0x00000044: 0000005e "MyStruct"
-
-CHECK: .debug_str_offsets.dwo contents:
-CHECK-NEXT: 0x00000000: Contribution size = 12, Version = 5
-CHECK-NEXT: 0x00000008: 00000000 "Handmade split DWARF producer"
-CHECK-NEXT: 0x0000000c: 0000001e "V5_split_compile_unit"
-CHECK-NEXT: 0x00000010: 00000034 "/home/test/splitCU"
-CHECK-NEXT: 0x00000014: Contribution size = 8, Version = 5
-CHECK-NEXT: 0x0000001c: 00000047 "V5_split_type_unit"
-CHECK-NEXT: 0x00000020: 0000005a "V5_split_Mystruct"
+COMMON: .debug_str_offsets contents:
+COMMON-NEXT: 0x00000000: Contribution size = 28, Version = 5
+COMMON-NEXT: 0x00000008: 00000000 "Handmade DWARF producer"
+COMMON-NEXT: 0x0000000c: 00000018 "Compile_Unit_1"
+COMMON-NEXT: 0x00000010: 00000027 "/home/test/CU1"
+COMMON-NEXT: 0x00000014: 00000067 "MyFunc"
+COMMON-NEXT: 0x00000018: 0000006e "MyVar1"
+COMMON-NEXT: 0x0000001c: 00000075 "MyVar2"
+COMMON-NEXT: 0x00000020: 0000007c "MyVar3"
+COMMON-NEXT: 0x00000024: Contribution size = 12, Version = 5
+COMMON-NEXT: 0x0000002c: 00000000 "Handmade DWARF producer"
+COMMON-NEXT: 0x00000030: 00000036 "Compile_Unit_2"
+COMMON-NEXT: 0x00000034: 00000045 "/home/test/CU2"
+COMMON-NEXT: 0x00000038: Contribution size = 8, Version = 5
+COMMON-NEXT: 0x00000040: 00000054 "Type_Unit"
+COMMON-NEXT: 0x00000044: 0000005e "MyStruct"
+
+SPLIT: .debug_str_offsets.dwo contents:
+SPLIT-NEXT: 0x00000000: Contribution size = 12, Version = 5
+SPLIT-NEXT: 0x00000008: 00000000 "Handmade split DWARF producer"
+SPLIT-NEXT: 0x0000000c: 0000001e "V5_split_compile_unit"
+SPLIT-NEXT: 0x00000010: 00000034 "/home/test/splitCU"
+SPLIT-NEXT: 0x00000014: Contribution size = 8, Version = 5
+SPLIT-NEXT: 0x0000001c: 00000047 "V5_split_type_unit"
+SPLIT-NEXT: 0x00000020: 0000005a "V5_split_Mystruct"
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