[Bug objc++/43353] New: Objective-C++ @try{} block produces linker error

[dyob at lunaport dot net]

Objective-C++ @try{} block produces linker error. 

$ cat test.mm
@interface Foo {
}
@end

@implementation Foo
@end

int main() {
    @try {
        Foo* foo;
        @throw foo;
    } @catch (Foo* e) {
    }
    return 0;
}

$ /usr/lib/gcc-snapshot/bin/g++ -x objective-c test.mm -lobjc 
# OK

$ /usr/lib/gcc-snapshot/bin/g++ -x objective-c++ test.mm -lobjc
/tmp/ccKy0vEn.o:(.gcc_except_table+0x10): undefined reference to `typeinfo for
Foo*'
collect2: ld returned 1 exit status

$ /usr/share/misc/config.guess
i686-pc-linux-gnu

$ uname -a
Linux colinux 2.6.22.18-co-0.7.6 #3 PREEMPT Fri Feb 5 19:21:41 UTC 2010 i686
GNU/Linux

$ cat /etc/debian_version
5.0.4

$ /usr/lib/gcc-snapshot/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/usr/lib/gcc-snapshot/bin/g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc-snapshot/libexec/gcc/i486-linux-gnu/4.5.0/lto-wrapper
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 20100310-1'
--with-bugurl=file:///usr/share/doc/gcc-snapshot/README.Bugs
--enable-languages=c,ada,c++,java,fortran,objc,obj-c++
--prefix=/usr/lib/gcc-snapshot --enable-shared --enable-multiarch
--enable-linker-build-id --with-system-zlib --disable-nls --enable-clocale=gnu
--enable-libstdcxx-debug --enable-plugin --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.5-snap/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.5-snap
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.5-snap
--with-arch-directory=i386 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-targets=all --with-arch-32=i486 --with-tune=generic
--disable-werror --enable-checking=yes --build=i486-linux-gnu
--host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.5.0 20100310 (experimental) [trunk revision 157334] (Debian
20100310-1)


-- 
           Summary: Objective-C++ @try{} block produces linker error
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: objc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dyob at lunaport dot net
 GCC build triplet: i486-linux-gnu
  GCC host triplet: i486-linux-gnu
GCC target triplet: i486-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43353