https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102481
Bug ID: 102481
Summary: Incorrect source file path in debuginfo for assembly
file specified with relative path
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: roc at ocallahan dot org
Target Milestone: ---
Steps to reproduce:
$ cat > /tmp/test.S
.global foo
foo:
ret
$ cd /tmp/obj
$ mkdir /tmp/obj
$ gcc -g -c - o test.o ../test.S
$ dwarfdump -i test.o
I get
UNIT<header overall offset = 0x00000000>:
< 0><0x0000000c> DW_TAG_compile_unit
DW_AT_stmt_list <.debug_line+0x00000000>
DW_AT_low_pc 0x00000000
DW_AT_high_pc <offset-from-lowpc>1
DW_AT_name test.S
DW_AT_comp_dir /tmp/obj
DW_AT_producer GNU AS 2.37.50
DW_AT_language DW_LANG_Mips_Assembler
This indicates the source file is at /tmp/obj/test.S, which is incorrect. If I
call the assembler directly, I get correct output:
$ as -g -o test.o ../test.S
$ dwarfdump -i test.o
UNIT<header overall offset = 0x00000000>:
< 0><0x0000000b> DW_TAG_compile_unit
DW_AT_stmt_list <.debug_line+0x00000000>
DW_AT_low_pc 0x00000000
DW_AT_high_pc 0x00000001
DW_AT_name ../test.S
DW_AT_comp_dir /tmp/obj
DW_AT_producer GNU AS 2.37.50
DW_AT_language DW_LANG_Mips_Assembler
gcc version is 11.2.1 20210728 (Red Hat 11.2.1-1).
