[Bug lto/50490] New: ICE when compiling libglib2.0 with LTO

["matt at use dot net" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50490

             Bug #: 50490
           Summary: ICE when compiling libglib2.0 with LTO
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: matt@use.net


Created attachment 25345
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25345
pre-processed source of the file that triggers the ICE

with trunk revision 178863:
"
gcc -O2 -flto -c mem-overflow.i

/home/matt/src/glib2.0-2.29.92/./glib/tests/mem-overflow.c:137:1: internal
compiler error: tree code 'optimization_node' is not supported in LTO streams
"

changing the -O2 to -O1 eliminates the ICE. valgrind shows nothing out of the
ordinary.

pre-processed file mentioned in the commandline above is attached.