https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64346
Bug ID: 64346
Summary: gcc generates incorrect debug info for ctor/dtor
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dehao at gcc dot gnu.org
#cat a.cc
#include <iostream>
#include <memory>
class ABC {
public:
ABC() {printf("abc\n");}
~ABC() {printf("xyz\n");}
};
int foo() {
std::unique_ptr<ABC> a(new ABC());
}
#g++4.8 a.cc -c -O2 -std=c++11 -g -fno-exceptions
#addr2line -e a.o -i -f 0x13
_ZN3ABCC1Ev
/usr/local/google/home/dehao/gcc/gcc-4_9/debug/a.cc:5
_Z3foov
/usr/local/google/home/dehao/gcc/gcc-4_9/debug/a.cc:10
#g++4.9 a.cc -c -O2 -std=c++11 -g -fno-exceptions
#addr2line -e a.o -i -f 0x13
_ZN3ABCC4Ev
/usr/local/google/home/dehao/gcc/gcc-4_9/debug/a.cc:5
_Z3foov
/usr/local/google/home/dehao/gcc/gcc-4_9/debug/a.cc:10
#g++4.9 a.cc -c -O0 -std=c++11 -g -fno-exceptions
#nm a.o |grep ABCC
0000000000000000 W _ZN3ABCC1Ev
0000000000000000 W _ZN3ABCC2Ev
0000000000000000 n _ZN3ABCC5Ev
Note that for the gcc 4.9 version and later, without any optimization
_ZN3ABCC4Ev does not exists in the symbol table. So we expect either
_ZN3ABCC1Ev or _ZN3ABCC2Ev in the addr2line result.
