[Bug c++/12241] New: failure to emit typeinfo with optimization

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12241

           Summary: failure to emit typeinfo with optimization
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: snyder at fnal dot gov
                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 typeinfo for class Ex below is not emitted at -O2 or above:

$ g++ -O2 -o x x.cc
/tmp/ccho1Q6s.o: In function `main':
/tmp/ccho1Q6s.o(.text+0x1b): undefined reference to `typeinfo for Ex'
collect2: ld returned 1 exit status
$

With -O1 or lower, the example links correctly.

Environment:
System: Linux karma 2.4.19-emp_2419p5a829i #1 Tue Sep 3 17:42:17 EST 2002 i686 i686 i386 GNU/Linux
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc/configure --prefix=/usr/local/gcc --enable-threads=posix --enable-long-long --enable-languages=c,c++,f77

How-To-Repeat:

Compile and link the following with -O2 or above.
The typeinfo for Ex is not emitted.

--------------------------------------------------------
class Ex { };

int main() {
  throw Ex();
  return 0;
}

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