[Bug lto/56570] New: ICE when streaming a TREE_BLOCK

[jamborm at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56570

             Bug #: 56570
           Summary: ICE when streaming a TREE_BLOCK
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jamborm@gcc.gnu.org


Created attachment 29617
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29617
Pre-processed failing source

When building Mozilla Firefox with LTO (gcc revision 196427, FF
changeset 123831:c95439870e05), I'm encountering an ICE when compiling
js/src/ion/shared/CodeGenerator-shared.cpp (and I suppose the same one
in a number of other files).  The problem occurs in the compilation
phase.

The ICE simply disappears when I add -save-temps to the command line
but reappeared when I also added --param ggc-min-expand=10 --param
ggc-min-heapsize=1024.  The attached resultant .ii file also ICEs but
--param ggc-min-expand=5 --param ggc-min-heapsize=512 is necessary to
trigger it.