------- Additional Comments From fnf at specifixinc dot com 2005-02-17 17:39
-------
(My network connection when down while submitting this bug so some
info didn't make it into the original report)
Previously I submitted a bug report (binutils/629), and a patch which
was accepted, to make the line and function info consistent for
inlined functions. That patch works for C code, but there are some
additional cases in C++ code that still fail. For one test case I
have, the current addr2line produces:
$ ./addr2line -e Test -f 0x804a39f
main
/links/opt-local/sourceware/bin/../lib/gcc/i686-pc-linux-gnu/4.0.0/../../../../include/c++/4.0.0/ext/mt_allocator.h:450
After applying the patch which I will attach to this bug report, I
get:
$ ./addr2line -e Test -f 0x804a39f
_S_get_pool
/links/opt-local/sourceware/bin/../lib/gcc/i686-pc-linux-gnu/4.0.0/../../../../include/c++/4.0.0/ext/mt_allocator.h:450
The code in mt_allocator.h at line 450 looks like:
static pool_type&
_S_get_pool()
{
static pool_type _S_pool; <---- This is line 450
return _S_pool;
}
The DWARF info has a chain of DIE's that includes a
DW_AT_specification attribute that chains to the DW_TAG_subprogram DIE
that has the right function name:
<6><480a>: Abbrev Number: 95 (DW_TAG_inlined_subroutine)
DW_AT_abstract_origin: <3970>
DW_AT_low_pc : 0x804a39f
DW_AT_high_pc : 0x804a3ac
<1><3970>: Abbrev Number: 85 (DW_TAG_subprogram)
DW_AT_sibling : <39a5>
DW_AT_specification: <241e>
DW_AT_inline : 3 (declared as inline and inlined)
<2><241e>: Abbrev Number: 70 (DW_TAG_subprogram)
DW_AT_external : 1
DW_AT_name : (indirect string, offset: 0x5e8): _S_get_pool
DW_AT_decl_file : 108
DW_AT_decl_line : 448
DW_AT_MIPS_linkage_name: (indirect string, offset: 0x1333):
_ZN9__gnu_cxx20__common_pool_policyINS_6__poolELb1EE11_S_get_poolEv
DW_AT_type : <2467>
DW_AT_declaration : 1
--
http://sources.redhat.com/bugzilla/show_bug.cgi?id=750
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