https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66080
Bug ID: 66080
Summary: incorrect debug info for CTOR
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: chihin.ko at oracle dot com
Target Milestone: ---
Created attachment 35505
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35505&action=edit
test case
for attach delegating_constructors.cc test case,
due to incorrect debug info, gdb behave strange:
can't stop at line bpt:
(gdb) b 15
Breakpoint 1 at 0x4009d2: file delegating_constructors.cc, line 15.
(gdb) b 16
Breakpoint 2 at 0x400a07: file delegating_constructors.cc, line 16.
(gdb) b 20
Breakpoint 3 at 0x400a3a: file delegating_constructors.cc, line 20.
(gdb) run
Starting program:
/workspace/chko/ws/dinstall/intel_S11_gcc482/delegating_constructors.dbx,gcc/intel-Linux/a.out
Error in re-setting breakpoint 1: Function
"/workspace/chko/ws/dinstall/intel_S11_gcc482/delegating_constructors.dbx" not
defined.
Error in re-setting breakpoint 2: Function
"/workspace/chko/ws/dinstall/intel_S11_gcc482/delegating_constructors.dbx" not
defined.
Error in re-setting breakpoint 3: Function
"/workspace/chko/ws/dinstall/intel_S11_gcc482/delegating_constructors.dbx" not
defined.
a:
x=1
y=2.00
z=3
st=4
arr:
x=1
y=2.00
z=3
st=4
x=1
y=2.00
z=3
st=4
a2:
x=11
y=22.00
z=33
st=77
[Inferior 1 (process 7687) exited normally]
(gdb) quit
here is one example in dwarf dump:
< 2><0x00000052> DW_TAG_subprogram
DW_AT_external yes(1)
DW_AT_name "St"
DW_AT_decl_file 0x00000001
delegating_constructors.cc
DW_AT_decl_line 0x00000006
DW_AT_declaration yes(1)
...
...
< 1><0x000001c5> DW_TAG_subprogram
DW_AT_specification <0x00000052> <== shouldn't
point to "St"
DW_AT_inline DW_INL_declared_not_inlined
DW_AT_object_pointer <0x000001d3>
DW_AT_sibling <0x000001e6>
...
...
< 1><0x000001eb> DW_TAG_subprogram
DW_AT_abstract_origin <0x000001c5>
DW_AT_linkage_name "_ZN2StC2Ei"
DW_AT_low_pc 0x004009a6
DW_AT_high_pc <offset-from-lowpc>22
