https://sourceware.org/bugzilla/show_bug.cgi?id=25173
Bug ID: 25173
Summary: dwarf_getsrc_die fails for rust code
Product: elfutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libdw
Assignee: unassigned at sourceware dot org
Reporter: mail at milianw dot de
CC: elfutils-devel at sourceware dot org
Target Milestone: ---
In hotspot/perfparser I notice that we fail to find srcfile information via
`dwarf_getsrc_die` for a given address. To reproduce, eu-addr2line can be
compared to addr2line from binutils:
```
$ cat main.rs
fn main() {
println!("Hello, world!");
}
$ rustc main.rs
$ objdump -S ./main
...
00000000000227f0
<_ZN4core3fmt3num53_$LT$impl$u20$core..fmt..UpperHex$u20$for$u20$i32$GT$3fmt17hd6956218784a7031E>:
227f0: 48 81 ec 88 00 00 00 sub $0x88,%rsp
227f7: 48 89 f0 mov %rsi,%rax
227fa: 8b 0f mov (%rdi),%ecx
227fc: 4c 8d 84 24 88 00 00 lea 0x88(%rsp),%r8
22803: 00
22804: 45 31 c9 xor %r9d,%r9d
22807: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
...
$ addr2line -e ./main -a 227f0
0x00000000000227f0
/rustc/9fda7c2237db910e41d6a712e9a2139b352e558b//src/libcore/fmt/num.rs:142
$ eu-addr2line -e ./main -a 227f0
0x00000000000227f0
??:0
```
I have zero experience with rust and too little understanding of DWARF still to
know what the exact reason here is. It would be great if elfutils could support
rust here too like binutils does.
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