Consider this program, compiled with -feliminate-dwarf2-dups
----------------------------
#include <iostream>
#include <string>
using namespace std;
int main(){
string s1 = "Hello";
}
-----------------------------
readelf -wi produces:
<0><103c>: Abbrev Number: 91 (DW_TAG_compile_unit)
DW_AT_stmt_list : 712
DW_AT_producer : (indirect string, offset: 0xff3): GNU C++ 3.4.1
DW_AT_language : 4 (C++)
DW_AT_name : ../../src/tx_ttf_string.cxx
DW_AT_comp_dir :
/home/nikolay/builds/xander-linux-x86/totalview/debugger/src/tests/bld/gcc_3.4.1_32
.........................
<1><2153>: Abbrev Number: 119 (DW_TAG_subprogram)
DW_AT_sibling : <2186>
DW_AT_external : 1
DW_AT_name : main
DW_AT_decl_file : 54
DW_AT_decl_line : 8
DW_AT_type : <10b6>
DW_AT_low_pc : 0x8048970 134515056
DW_AT_high_pc : 0x80489f3 134515187
DW_AT_frame_base : 1 byte block: 55 (DW_OP_reg5; )
<2><216e>: Abbrev Number: 116 (DW_TAG_lexical_block)
DW_AT_low_pc : 0x804898d 134515085
DW_AT_high_pc : 0x80489e9 134515177
<3><2177>: Abbrev Number: 120 (DW_TAG_variable)
DW_AT_name : s1
DW_AT_decl_file : 54
DW_AT_decl_line : 9
DW_AT_type : <#a92e>
DW_AT_location : 2 byte block: 91 68 (DW_OP_fbreg: -24; )
Notice, that variable s1 is of type <#a92e>,
The problem is, that type <#a92e> is defined as typedef in different CU
(which is fine) and inside the scope of some "arbitrary" structure (which is
wrong).
Effectively type of s1 is not visible (out of scope) in main and is reported as
<void> by the debugger.
--
Summary: -feliminate-dwarf2-dups produces debug entries in wrong
scope
Product: gcc
Version: 3.4.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: debug
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: nikolay at etnus dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18112
