[Bug libitm/60004] New: Conditional return within transaction causes ICE

["spear at cse dot lehigh.edu" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60004

            Bug ID: 60004
           Summary: Conditional return within transaction causes ICE
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libitm
          Assignee: unassigned at gcc dot gnu.org
          Reporter: spear at cse dot lehigh.edu

The following code produces an ICE:
int a;
int f() {
    __transaction_atomic {
        if (a == 5)
            return 1;
    }
}

compilation:
gcc -std=c++11 -fgnu-tm test_if.cc -c

error:
test_if.cc: In function âint f()â:
test_if.cc:4:5: internal compiler error: in lower_eh_constructs_2, at
tree-eh.c:2105
 int f()
     ^
0xb96c26 lower_eh_constructs_2
        ../../../src/gcc-libitm/gcc/tree-eh.c:2105
0xb96c26 lower_eh_constructs_1
        ../../../src/gcc-libitm/gcc/tree-eh.c:2123
0xb979a4 lower_try_finally_switch
        ../../../src/gcc-libitm/gcc/tree-eh.c:1392
0xb979a4 lower_try_finally
        ../../../src/gcc-libitm/gcc/tree-eh.c:1722
0xb979a4 lower_eh_constructs_2
        ../../../src/gcc-libitm/gcc/tree-eh.c:2065
0xb979a4 lower_eh_constructs_1
        ../../../src/gcc-libitm/gcc/tree-eh.c:2123
0xb98e91 lower_eh_constructs
        ../../../src/gcc-libitm/gcc/tree-eh.c:2141
0xb98e91 execute
        ../../../src/gcc-libitm/gcc/tree-eh.c:2193
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Environment: 
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/spear/gcc/install/gcc/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../../src/gcc-libitm/configure
--prefix=/home/spear/gcc/install/gcc --with-gmp=/home/spear/gcc/install/gmp/
--with-mpfr=/home/spear/gcc/install/mpfr/
--with-mpc=/home/spear/gcc/install/mpc/ --enable-languages=c,c++,lto
--enable-multilib --enable-lto
Thread model: posix
gcc version 4.9.0 20140129 (experimental) (GCC)