Index: lld/trunk/ELF/GdbIndex.h =================================================================== --- lld/trunk/ELF/GdbIndex.h +++ lld/trunk/ELF/GdbIndex.h @@ -30,6 +30,7 @@ StringRef AbbrevSection; StringRef GnuPubNamesSection; StringRef GnuPubTypesSection; + StringRef StrSection; template llvm::Optional findAux(const InputSectionBase &Sec, @@ -47,9 +48,10 @@ const llvm::DWARFSection &getLineSection() const override { return LineSection; } + StringRef getFileName() const override { return ""; } StringRef getCUIndexSection() const override { return ""; } StringRef getAbbrevSection() const override { return AbbrevSection; } - StringRef getStringSection() const override { return ""; } + StringRef getStringSection() const override { return StrSection; } StringRef getGnuPubNamesSection() const override { return GnuPubNamesSection; } Index: lld/trunk/ELF/GdbIndex.cpp =================================================================== --- lld/trunk/ELF/GdbIndex.cpp +++ lld/trunk/ELF/GdbIndex.cpp @@ -44,6 +44,8 @@ GnuPubNamesSection = toStringRef(Sec->Data); else if (Sec->Name == ".debug_gnu_pubtypes") GnuPubTypesSection = toStringRef(Sec->Data); + else if (Sec->Name == ".debug_str") + StrSection = toStringRef(Sec->Data); } } Index: lld/trunk/test/ELF/conflict-debug-variable2.s =================================================================== --- lld/trunk/test/ELF/conflict-debug-variable2.s +++ lld/trunk/test/ELF/conflict-debug-variable2.s @@ -0,0 +1,160 @@ +# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o + +# RUN: llvm-dwarfdump -v %t.o | FileCheck -check-prefix=INPUT %s +# INPUT: .debug_info contents: +# INPUT: DW_TAG_variable +# INPUT-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000027] = "foo") +# INPUT-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0033 => {0x00000033} "int") +# INPUT-NEXT: DW_AT_external [DW_FORM_flag_present] (true) +# INPUT-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/home/path/test.c") +# INPUT-NEXT: DW_AT_decl_line [DW_FORM_data1] (1) +# INPUT-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_addr 0x0) +# INPUT: DW_TAG_variable +# INPUT-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x0000002f] = "bar") +# INPUT-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0033 => {0x00000033} "int") +# INPUT-NEXT: DW_AT_external [DW_FORM_flag_present] (true) +# INPUT-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/home/path/test.c") +# INPUT-NEXT: DW_AT_decl_line [DW_FORM_data1] (2) +# INPUT-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_addr 0x0) + +## Check we use information from .debug_info in messages. +# RUN: not ld.lld %t.o %t.o -o %t 2>&1 | FileCheck %s +# CHECK: duplicate symbol: bar +# CHECK-NEXT: >>> defined at test.c:2 +# CHECK-NEXT: >>> {{.*}}:(bar) +# CHECK-NEXT: >>> defined at test.c:2 +# CHECK-NEXT: >>> {{.*}}:(.data+0x0) +# CHECK: duplicate symbol: foo +# CHECK-NEXT: >>> defined at test.c:1 +# CHECK-NEXT: >>> {{.*}}:(foo) +# CHECK-NEXT: >>> defined at test.c:1 +# CHECK-NEXT: >>> {{.*}}:(.bss+0x0) + +# Used reduced output from following code and clang +# version 6.0.0 (trunk 316661) to produce this input file: +# Source (test.c): +# int foo = 0; +# int bar = 1; +# Invocation: clang -g -S test.c + +.text +.file "test.c" +.file 1 "test.c" + +.type foo,@object +.bss +.globl foo +.p2align 2 +foo: + .long 0 + .size foo, 4 + +.type bar,@object +.data +.globl bar +.p2align 2 +bar: + .long 1 + .size bar, 4 + +.section .debug_str,"MS",@progbits,1 +.Linfo_string0: + .asciz "clang version 6.0.0" +.Linfo_string1: + .asciz "test.c" +.Linfo_string2: + .asciz "/home/path/" +.Linfo_string3: + .asciz "foo" +.Linfo_string4: + .asciz "int" +.Linfo_string5: + .asciz "bar" + +.section .debug_abbrev,"",@progbits + .byte 1 # Abbreviation Code + .byte 17 # DW_TAG_compile_unit + .byte 1 # DW_CHILDREN_yes + .byte 37 # DW_AT_producer + .byte 14 # DW_FORM_strp + .byte 19 # DW_AT_language + .byte 5 # DW_FORM_data2 + .byte 3 # DW_AT_name + .byte 14 # DW_FORM_strp + .byte 16 # DW_AT_stmt_list + .byte 23 # DW_FORM_sec_offset + .byte 27 # DW_AT_comp_dir + .byte 14 # DW_FORM_strp + .ascii "\264B" # DW_AT_GNU_pubnames + .byte 25 # DW_FORM_flag_present + .byte 0 # EOM(1) + .byte 0 # EOM(2) + + .byte 2 # Abbreviation Code + .byte 52 # DW_TAG_variable + .byte 0 # DW_CHILDREN_no + .byte 3 # DW_AT_name + .byte 14 # DW_FORM_strp + .byte 73 # DW_AT_type + .byte 19 # DW_FORM_ref4 + .byte 63 # DW_AT_external + .byte 25 # DW_FORM_flag_present + .byte 58 # DW_AT_decl_file + .byte 11 # DW_FORM_data1 + .byte 59 # DW_AT_decl_line + .byte 11 # DW_FORM_data1 + .byte 2 # DW_AT_location + .byte 24 # DW_FORM_exprloc + .byte 0 # EOM(1) + .byte 0 # EOM(2) + + .byte 3 # Abbreviation Code + .byte 36 # DW_TAG_base_type + .byte 0 # DW_CHILDREN_no + .byte 3 # DW_AT_name + .byte 14 # DW_FORM_strp + .byte 62 # DW_AT_encoding + .byte 11 # DW_FORM_data1 + .byte 11 # DW_AT_byte_size + .byte 11 # DW_FORM_data1 + .byte 0 # EOM(1) + .byte 0 # EOM(2) + .byte 0 # EOM(3) + +.section .debug_info,"",@progbits +.Lcu_begin0: + .long 76 # Length of Unit + .short 4 # DWARF version number + .long .debug_abbrev # Offset Into Abbrev. Section + .byte 8 # Address Size (in bytes) + + .byte 1 # Abbrev [1] 0xb:0x45 DW_TAG_compile_unit + .long .Linfo_string0 # DW_AT_producer + .short 12 # DW_AT_language + .long .Linfo_string1 # DW_AT_name + .long 0 # DW_AT_stmt_list + .long .Linfo_string2 # DW_AT_comp_dir + + .byte 2 # Abbrev [2] 0x1e:0x15 DW_TAG_variable + .long .Linfo_string3 # DW_AT_name + .long 51 # DW_AT_type + .byte 1 # DW_AT_decl_file + .byte 1 # DW_AT_decl_line + .byte 9 # DW_AT_location + .byte 3 + .quad foo + + .byte 3 # Abbrev [3] 0x33:0x7 DW_TAG_base_type + .long .Linfo_string4 # DW_AT_name + .byte 5 # DW_AT_encoding + .byte 4 # DW_AT_byte_size + + .byte 2 # Abbrev [2] 0x3a:0x15 DW_TAG_variable + .long .Linfo_string5 # DW_AT_name + .long 51 # DW_AT_type + .byte 1 # DW_AT_decl_file + .byte 2 # DW_AT_decl_line + .byte 9 # DW_AT_location + .byte 3 + .quad bar + .byte 0 # End Of Children Mark Index: lld/trunk/test/ELF/gdb-index-noranges.s =================================================================== --- lld/trunk/test/ELF/gdb-index-noranges.s +++ lld/trunk/test/ELF/gdb-index-noranges.s @@ -0,0 +1,49 @@ +# REQUIRES: x86 +# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o + +## Input is reduced from following code and invocation: +## clang++ -gsplit-dwarf -c test.ii -o test.s -S +## clang version: 6.0.0 (trunk 318293) +## +## test.ii: +## int a; +## +## Debug information does not contain any address ranges. +## We crashed in that case. Check we don't. +# RUN: ld.lld --gdb-index %t1.o -o %t + +.section .debug_str,"MS",@progbits,1 +.Lskel_string0: + .asciz "t.dwo" +.Lskel_string1: + .asciz "path" + +.section .debug_abbrev,"",@progbits + .byte 1 # Abbreviation Code + .byte 17 # DW_TAG_compile_unit + .byte 0 # DW_CHILDREN_no + .byte 16 # DW_AT_stmt_list + .byte 23 # DW_FORM_sec_offset + .ascii "\260B" # DW_AT_GNU_dwo_name + .byte 14 # DW_FORM_strp + .byte 27 # DW_AT_comp_dir + .byte 14 # DW_FORM_strp + .ascii "\261B" # DW_AT_GNU_dwo_id + .byte 7 # DW_FORM_data8 + .ascii "\263B" # DW_AT_GNU_addr_base + .byte 23 # DW_FORM_sec_offset + .byte 0 # EOM(1) + .byte 0 # EOM(2) + .byte 0 # EOM(3) + +.section .debug_info,"",@progbits + .long 32 # Length of Unit + .short 4 # DWARF version number + .long .debug_abbrev # Offset Into Abbrev. Section + .byte 8 # Address Size (in bytes) + .byte 1 # Abbrev [1] 0xb:0x19 DW_TAG_compile_unit + .long 0 # DW_AT_stmt_list + .long .Lskel_string0 # DW_AT_GNU_dwo_name + .long .Lskel_string1 # DW_AT_comp_dir + .quad -3824446529333676116 # DW_AT_GNU_dwo_id + .long 0 # DW_AT_GNU_addr_base