[Bug c++/53672] New: gcc/branches/cilkplus does not like C++ spawn (when optimized)

[jjhforrest at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53672

             Bug #: 53672
           Summary: gcc/branches/cilkplus does not like C++ spawn (when
                    optimized)
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: jjhforr...@gmail.com


Created attachment 27619
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27619
.ii file created with -save-temp

In real code I get

In function '<built-in>':
cc1plus: internal compiler error: Segmentation fault

With tiny example (segfault.cpp -> segfault.ii) I get

/j/mycilk3/bin/g++ -O2 segfault.ii
segfault.cpp: In function ‘<built-in>’:
segfault.cpp:33:1: internal compiler error: in remap_gimple_op_r, at
tree-inline.c:849
 }
 ^
works at -O1

Output from  /j/mycilk3/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/j/mycilk3/bin/g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../cilk2/configure --prefix=/j/mycilk3 --libexecdir=/usr/lib
--enable-__cxa_atexit --enable-clocale=gnu --enable-languages=c,c++
--disable-multilib --disable-bootstrap --with-system-zlib CFLAGS='-fPIC
-march=x86-64' LD=/usr/bin/ld
Thread model: posix
gcc version 4.8.0 20120522 (experimental) (GCC)

segfault.ii attached