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From: "jjhforrest at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/53672] New: gcc/branches/cilkplus does not like C++ spawn (when optimized)
Date: Thu, 14 Jun 2012 15:56:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53672

             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: unassigned@gcc.gnu.org
        ReportedBy: jjhforrest@gmail.com


Created attachment 27619
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=3D27619
.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 =E2=80=98<built-in>=E2=80=99:
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=3D/j/mycilk3/bin/g++
COLLECT_LTO_WRAPPER=3D/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapp=
er
Target: x86_64-unknown-linux-gnu
Configured with: ../cilk2/configure --prefix=3D/j/mycilk3 --libexecdir=3D/u=
sr/lib
--enable-__cxa_atexit --enable-clocale=3Dgnu --enable-languages=3Dc,c++
--disable-multilib --disable-bootstrap --with-system-zlib CFLAGS=3D'-fPIC
-march=3Dx86-64' LD=3D/usr/bin/ld
Thread model: posix
gcc version 4.8.0 20120522 (experimental) (GCC)

segfault.ii attached