[Bug c++/12724] New: [3.3 regression] access to member's operator() unchecked

["stefaandr at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12724

           Summary: [3.3 regression] access to member's operator() unchecked
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: stefaandr at hotmail dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu

The following code compiles cleanly (but shouldn't):

struct a {
	int operator()() { return 0; };
};
class b {
	protected:
		a my_a;
};
int main() {
	b my_b;
	my_b.my_a();
};

Also compiles on 3.3.2.  Does NOT compile on latest 3.4-cvs or on 3.2.3 (and so
it should be).

Reading specs from /esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/specs
Configured with: ../../src/gcc/3.3/configure --prefix=/esat/firenze/install
--program-suffix=-3.3 --enable-languages=c,c++
Thread model: posix
gcc version 3.3.3 20031022 (prerelease)
 /esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/cc1plus -quiet -v
-D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=3 -D_GNU_SOURCE test5.cpp
-D__GNUG__=3 -quiet -dumpbase test5.cpp -auxbase test5 -version -o /tmp/cc4dPYEf.s
GNU C++ version 3.3.3 20031022 (prerelease) (i686-pc-linux-gnu)
        compiled by GNU C version 3.3.1.
GGC heuristics: --param ggc-min-expand=81 --param ggc-min-heapsize=96541
ignoring nonexistent directory "/esat/firenze/install/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /esat/firenze/install/include/c++/3.3.3
 /esat/firenze/install/include/c++/3.3.3/i686-pc-linux-gnu
 /esat/firenze/install/include/c++/3.3.3/backward
 /usr/local/include
 /esat/firenze/install/include
 /esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include
 /usr/include
End of search list.
 as -V -Qy -o /tmp/ccsDFhlm.o /tmp/cc4dPYEf.s
GNU assembler version 2.14 (i686-pc-linux-gnu) using BFD version 2.14 20030612
 /esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/collect2
--eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o test5
/usr/lib/crt1.o /usr/lib/crti.o
/esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/crtbegin.o
-L/esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3
-L/esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../..
/tmp/ccsDFhlm.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/esat/firenze/install/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/crtend.o /usr/lib/crtn.o