On Sat, Jul 16, 2016 at 09:06:10PM +0200, Albert Netymk wrote:
> == addr.c
>
> ```
> #include <stdio.h>
>
> void f() { }
>
> int main(int argc, char **argv)
> {
> f();
> puts("done");
> return 0;
> }
> ```
>
> ```
> $ clang -g addr.c ; objdump -d a.out | grep -B 3 puts | tail -n 4
> 400556: e8 d5 ff ff ff callq 400530 <f>
> 40055b: 48 bf 04 06 40 00 00 movabs $0x400604,%rdi
> 400562: 00 00 00
> 400565: e8 a6 fe ff ff callq 400410 <puts@plt>
> ```
> `40055b` is corresponding to placing "done" in `%rdi`, so I expect it
> to be associated to line of `puts("done")`. However, `addr2line
> 40055b` shows the line of `f()`.
>
>
> == ENV
>
> clang: clang version 3.8.1-svn271230-1~exp1 (branches/release_38)
> addr2line: GNU addr2line (GNU Binutils for Ubuntu) 2.24
Please dump out the raw line number information produced by clang,
using "readelf -wl a.out". I think you will find that the problem is
with clang, not addr2line.
--
Alan Modra
Australia Development Lab, IBM
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