http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58297
Bug ID: 58297
Summary: wrong DTOR call is generated when virtual base is
present
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: kcc at gcc dot gnu.org
For some reason, g++ (r202164) generates a call to an incorrect DTOR,
but never generates the DTOR itself. As the result, we get this link error:
undefined reference to `BBB::~BBB(void const**)'
The test case is reduced from Chromium sources,
https://code.google.com/p/chromium/issues/detail?id=282285
% head z.h z1.cc z2.cc
==> z.h <==
struct AAA { };
struct BBB: virtual AAA { ~BBB (); };
==> z1.cc <==
#include "z.h"
BBB::~BBB() { }
int main() { }
==> z2.cc <==
#include "z.h"
struct CCC: BBB { ~CCC (); };
CCC::~CCC () { }
%
% g++ z1.cc z2.cc # 4.6.3
% clang++ z1.cc z2.cc # fresh trunk
% $FRESH_GCC/bin/g++ z1.cc z2.cc
/tmp/ccO8JGGF.o: In function `CCC::~CCC()':
z2.cc:(.text+0x31): undefined reference to `BBB::~BBB(void const**)'
/tmp/ccO8JGGF.o: In function `CCC::~CCC()':
z2.cc:(.text+0x6a): undefined reference to `BBB::~BBB(void const**)'
collect2: error: ld returned 1 exit status
