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[ELF] - Check we are able to report errors when DW_AT_decl_file is invalid. 

We did not try to support this intentionally but have
an error handling and reporting logic that can take care
of that and hence needs a test. 

llvm-svn: 337250
This commit is contained in:
George Rimar 2018-07-17 08:04:27 +00:00
parent a67e0d0989
commit e25b1c35bb
1 changed files with 103 additions and 0 deletions
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103
lld/test/ELF/conflict-debug-variable-file-index.s Normal file
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# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
# RUN: not ld.lld %t.o %t.o -o %t 2>&1 | FileCheck %s
## Check we are able to report errors even if DW_AT_decl_file
## contains invalid file name index.
## We did not try to support this intentionally but have
## an error handling and reporting logic that can take care
## of that and hence needs a test.
# CHECK: duplicate symbol: foo
# CHECK-NEXT: >>> defined at {{.*}}.o:(foo)
# CHECK-NEXT: >>> {{.*}}.o:(.bss+0x0)
# Used modified output from the following code and gcc 7.1.0:
# Source (1.c):
# int foo = 0;
# Invocation: g++ -g -S 1.c
.bss
.globl foo
.type foo, @object
.size foo, 4
foo:
.text
.file 1 "1.c"
.section .debug_info,"",@progbits
.long 0x35 # Compile Unit: length = 0x0000004b)
.value 0x4 # version = 0x0004
.long 0 # abbr_offset = 0x0
.byte 0x8 # addr_size = 0x08
.uleb128 0x1 # DW_TAG_compile_unit [1] *
.long 0 # DW_AT_producer [DW_FORM_strp] ( .debug_str[0x00000000] = )
.byte 0x4 # DW_AT_language [DW_FORM_data1] (DW_LANG_C_plus_plus)
.string "1.c" # DW_AT_name [DW_FORM_string] ("1.c")
.long 0 # DW_AT_comp_dir [DW_FORM_strp] ( .debug_str[0x00000000] = )
.long 0 # DW_AT_stmt_list [DW_FORM_sec_offset] (0x00000000)
.uleb128 0x2 # DW_TAG_variable [2]
.string "foo" # DW_AT_name [DW_FORM_string] ("foo")
.byte 0xFE # DW_AT_decl_file [DW_FORM_data1] <broken file>
.byte 0x1 # DW_AT_decl_line [DW_FORM_data1] (1)
.long 0x32 # DW_AT_type [DW_FORM_ref4] (cu + 0x0032 => {0x00000032})
.uleb128 0x9 # DW_AT_external [DW_FORM_flag_present] (true)
.byte 0x3
.quad foo # DW_AT_location [DW_FORM_exprloc] (DW_OP_addr 0x0)
.uleb128 0x3 # DW_TAG_base_type [3]
.byte 0x4 # DW_AT_byte_size [DW_FORM_data1] (0x04)
.byte 0x5 # DW_AT_encoding [DW_FORM_data1] (DW_ATE_signed)
.string "int" # DW_AT_name [DW_FORM_string] ("int")
.section .debug_abbrev,"",@progbits
.uleb128 0x1 # Abbreviation code.
.uleb128 0x11 # DW_TAG_compile_unit
.byte 0x1 # ID
.uleb128 0x25 # DW_AT_producer, DW_FORM_strp
.uleb128 0xe
.uleb128 0x13 # DW_AT_language, DW_FORM_data1
.uleb128 0xb
.uleb128 0x3 # DW_AT_name, DW_FORM_string
.uleb128 0x8
.uleb128 0x1b # DW_AT_comp_dir, DW_FORM_strp
.uleb128 0xe
.uleb128 0x10 # DW_AT_stmt_list, DW_FORM_sec_offset
.uleb128 0x17
.byte 0
.byte 0
.uleb128 0x2 # ID
.uleb128 0x34 # DW_TAG_variable, DW_CHILDREN_no
.byte 0
.uleb128 0x3 # DW_AT_name, DW_FORM_string
.uleb128 0x8
.uleb128 0x3a # DW_AT_decl_file, DW_FORM_data1
.uleb128 0xb
.uleb128 0x3b # DW_AT_decl_line, DW_FORM_data1
.uleb128 0xb
.uleb128 0x49 # DW_AT_type, DW_FORM_ref4
.uleb128 0x13
.uleb128 0x3f # DW_AT_external, DW_FORM_flag_present
.uleb128 0x19
.uleb128 0x2 # DW_AT_location, DW_FORM_exprloc
.uleb128 0x18
.byte 0
.byte 0
.uleb128 0x3 # ID
.uleb128 0x24 # DW_TAG_base_type, DW_CHILDREN_no
.byte 0
.uleb128 0xb # DW_AT_byte_size, DW_FORM_data1
.uleb128 0xb
.uleb128 0x3e # DW_AT_encoding, DW_FORM_data1
.uleb128 0xb
.uleb128 0x3 # DW_AT_name, DW_FORM_string
.uleb128 0x8
.byte 0
.byte 0
.byte 0