Bug#205402: g++-3.3: typedef handling broken

[Goedson Teixeira Paixao <goedson@debian.org>]

Package: g++-3.3
Version: 1:3.3.1-1
Severity: normal

g++-3.3 fails to compile the code in test.cc with the following message: 
test.cc: In function `int main(int, char**)':
test.cc:22: error: conversion from `BClass' to `B*' is ambiguous
test.cc:16: error: candidates are: BClass::operator B*()
test.cc:9: error:                 AClass::operator A*()

Although it correctly compiles the equivalent code in test2.cc

-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux maestro 2.4.18-k7 #1 SMP Sáb Ago 9 02:10:04 BRT 2003 i686
Locale: LANG=C, LC_CTYPE=C

Versions of packages g++-3.3 depends on:
ii  gcc-3.3                       1:3.3.1-1  The GNU C compiler
ii  gcc-3.3-base                  1:3.3.1-1  The GNU Compiler Collection (base 
ii  libc6                         2.3.2-2    GNU C Library: Shared libraries an
ii  libstdc++5-3.3-dev            1:3.3.1-1  The GNU Standard C++ Library v3 (d

-- no debconf information

typedef struct _A A;
typedef struct _A B;

void some_function(B *b);

class AClass {

public:
  operator A*() { return 0;}

};

class BClass :public AClass {

public:
  operator B*() { return 0;}

};

int main(int argc, char **argv) {
  BClass b;
  some_function(b);
}

void some_function(struct _A *b);

class AClass {

public:
  operator struct _A*() { return 0;}

};

class BClass :public AClass {

public:
  operator struct _A*() { return 0;}

};

int main(int argc, char **argv) {
  BClass b;
  some_function(b);
}