[Bug c++/13510] New: Cannot inherit method from virtual base class

["david dot boerschlein at pb dot com" <gcc-bugzilla at gcc dot gnu dot org>]

I have a method in a virtual base class which I am calling from the derived 
class.    I have reproduced this problem and provided a workaround.   I made 
the priority high because the compiler should be able to do inheiritance.

Here is a session dialog which lists all files and messages as well as the 
output when compiling with "-E":


$ buildbug.ksh
bug.cpp: In member function `void ownDerived::doit()':
bug.cpp:20: error: no matching function for call to `ownDerived::myMethod()'
bug.cpp:15: error: candidates are: virtual void ownDerived::myMethod(const 
   std::string&)

$ gcc --version
gcc (GCC) 3.3
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ uname -a
AIX rscipmgr21 1 5 000AD74A4C00 unknown

$ g++ -E -DBUGGY -fno-rtti -isystem -I- -I../common_utils -
I/usr/lpp/toolbox/include -Wall -W -Wshadow -Wpointer-arith -Wcast-qual -Wwrite-
strings -Wsign-compare -Wstrict-prototypes -Werror -pedantic -o bug.o -c bug.cpp

$ nflist *.cpp buildbug.ksh bug.o

bug.cpp:
    1:#include <string>
    2:#include <iostream>
    3:
    4:class ownBase
    5:{
    6:   public:
    7:      virtual void myMethod(const std::string& msg) = 0;
    8:      void myMethod(void) { myMethod("test"); }
    9:};
   10:
   11:class ownDerived: public virtual ownBase
   12:{
   13:   public:
   14:      virtual void myMethod(const std::string& msg)
   15:      {
   16:           std::cerr << msg << ": testing" << std::endl;
   17:      }
   18:      void doit(void)
   19:      {
   20:           myMethod();
   21:      }
   22:};
   23:
   24:int main()
   25:{
   26:    ownDerived der;
   27:    der.doit();
   28:    return 0;
   29:}
   30:

workaround.cpp:
    1:#include <string>
    2:#include <iostream>
    3:
    4:class ownBase
    5:{
    6:   public:
    7:      virtual void myMethod(const std::string& msg) = 0;
    8:      void myMethod(void) { myMethod("test"); }
    9:};
   10:
   11:class ownDerived: public virtual ownBase
   12:{
   13:   public:
   14:      virtual void myMethod(const std::string& msg)
   15:      {
   16:           std::cerr << msg << ": testing" << std::endl;
   17:      }
   18:      void doit(void)
   19:      {
   20:           ownBase::myMethod();
   21:      }
   22:};
   23:
   24:int main()
   25:{
   26:    ownDerived der;
   27:    der.doit();
   28:    return 0;
   29:}
   30:

buildbug.ksh:
    1:#!/bin/ksh
    2:g++ -g -DBUGGY -fno-rtti -isystem -I- -I../common_utils -
I/usr/lpp/toolbox/include -Wall -W -Wshadow -Wpointer-arith -Wcast-qual -Wwrite-
strings -Wsign-compare -Wstrict-prototypes -Werror -pedantic -o workaround.o -c 
workaround.cpp
    3:g++ -g -DBUGGY -fno-rtti -isystem -I- -I../common_utils -
I/usr/lpp/toolbox/include -Wall -W -Wshadow -Wpointer-arith -Wcast-qual -Wwrite-
strings -Wsign-compare -Wstrict-prototypes -Werror -pedantic -o bug.o -c bug.cpp
    4:

bug.o:
    1:# 1 "bug.cpp"
    2:# 1 "<built-in>"
    3:# 1 "<command line>"
    4:# 1 "bug.cpp"
    5:# 1 "/opt/gcc-3.3/include/c++/3.3/string" 1 3
    6:# 44 "/opt/gcc-3.3/include/c++/3.3/string" 3
    7:
    8:# 1 "/opt/gcc-3.3/include/c++/3.3/powerpc-ibm-
aix5.1.0.0/bits/c++config.h" 1 3
    9:# 35 "/opt/gcc-3.3/include/c++/3.3/powerpc-ibm-
aix5.1.0.0/bits/c++config.h" 3
   10:# 1 "/opt/gcc-3.3/include/c++/3.3/powerpc-ibm-
aix5.1.0.0/bits/os_defines.h" 1 3
   11:# 36 "/opt/gcc-3.3/include/c++/3.3/powerpc-ibm-
aix5.1.0.0/bits/c++config.h" 2 3
   12:# 46 "/opt/gcc-3.3/include/c++/3.3/string" 2 3
   13:# 1 "/opt/gcc-3.3/include/c++/3.3/bits/stringfwd.h" 1 3
   14:# 43 "/opt/gcc-3.3/include/c++/3.3/bits/stringfwd.h" 3
   15:
   16:
   17:
   18:namespace std
   19:{
   20:  template<typename _Alloc>
   21:    class allocator;
   22:
   23:  template<class _CharT>
   24:    struct char_traits;
   25:
   26:  template<typename _CharT, typename _Traits = char_traits<_CharT>,
   27:           typename _Alloc = allocator<_CharT> >
   28:    class basic_string;
   29:
   30:  template<> struct char_traits<char>;
   31:
   32:  typedef basic_string<char> string;
   33:
   34:
   35:
   36:
   37:
   38:
   39:}
   40:# 47 "/opt/gcc-3.3/include/c++/3.3/string" 2 3
   41:# 1 "/opt/gcc-3.3/include/c++/3.3/bits/char_traits.h" 1 3
   42:# 44 "/opt/gcc-3.3/include/c++/3.3/bits/char_traits.h" 3
   43:
   44:# 1 "/opt/gcc-3.3/include/c++/3.3/cstring" 1 3
   45:# 48 "/opt/gcc-3.3/include/c++/3.3/cstring" 3
   46:
   47:# 1 "/opt/gcc-3.3/include/c++/3.3/cstddef" 1 3
   48:# 47 "/opt/gcc-3.3/include/c++/3.3/cstddef" 3
   49:
   50:# 1 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/stddef.h" 1 3 4
   51:# 151 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/stddef.h" 3 4
   52:typedef long int ptrdiff_t;
   53:# 213 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/stddef.h" 3 4
   54:typedef long unsigned int size_t;
   55:# 49 "/opt/gcc-3.3/include/c++/3.3/cstddef" 2 3
   56:
   57:namespace std
   58:{
   59:  using ::ptrdiff_t;
   60:  using ::size_t;
   61:}
   62:# 50 "/opt/gcc-3.3/include/c++/3.3/cstring" 2 3
   63:
   64:# 1 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/string.h" 1 3 4
   65:# 35 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/string.h" 3 4
   66:# 1 "/usr/include/standards.h" 1 3 4
   67:# 36 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/string.h" 2 3 4
   68:
   69:
   70:
   71:# 1 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/sys/types.h" 1 3 4
   72:# 38 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/sys/types.h" 3 4
   73:extern "C" {
   74:# 50 "/opt/gcc-3.3/lib/gcc-lib/powerpc-ibm-
aix5.1.0.0/3.3/include/sys/types.h" 3 4
   75:# 1 "/usr/include/sys/inttypes.h" 1 3 4
   76:# 56 "/usr/include/sys/inttypes.h" 3 4
   77:extern "C" {
   78:# 65 "/usr/include/sys/inttypes.h" 3 4
   79:typedef signed char int8_t;
   80:typedef signed short int16_t;
   81:typedef signed int int32_t;
   82:
   83:
   84:
   85:
   86:typedef signed long long int64_t;
   87:
   88:
   89:
   90:typedef unsigned char uint8_t;
   91:typedef unsigned short uint16_t;
   92:typedef unsigned int uint32_t;
   93:
   94:
   95:
   96:
   97:typedef unsigned long long uint64_t;
   98:# 92 "/usr/include/sys/inttypes.h" 3 4
   99:typedef int64_t intmax_t;
  100:typedef uint64_t uintmax_t;
  101:# 104 "/usr/include/sys/inttypes.h" 3 4
  102:typedef signed long intptr_t;
  103:typedef unsigned long uintptr_t;
  104:
  105:
  106:
  107:
  108:
  109:typedef signed char int_least8_t;
  110:typedef signed short int_least16_t;
  111:typedef signed int int_least32_t;
  112:
  113:
  114:
  115:
  116:typedef signed long long int_least64_t;
  117:
  118:
  119:
  120:typedef unsigned char uint_least8_t;
  121:typedef unsigned short uint_least16_t;
  122:typedef unsigned int uint_least32_t;
  123:
  124:
  125:
  126:
  127:typedef unsigned long long uint_least64_t;
  128:# 142 "/usr/include/sys/inttypes.h" 3 4
  129:typedef int32_t intfast_t;
  130:typedef uint32_t uintfast_t;
  131:
  132:
  133:
  134:typedef signed char int_fast8_t;
  135:typedef int32_t int_fast16_t;
  136:typedef int32_t int_fast32_t;
  137:typedef uint32_t uint_fast8_t;
  138:typedef uint32_t uint_fast16_t;
  139:typedef uint32_t uint_fast32_t;
  140:

-- 
           Summary: Cannot inherit method from virtual base class
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P1
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: david dot boerschlein at pb dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: AIX rscipmgr21 1 5 000AD74A4C00 unknown
  GCC host triplet: AIX rscipmgr21 1 5 000AD74A4C00 unknown
GCC target triplet: AIX rscipmgr21 1 5 000AD74A4C00 unknown


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13510