[Bug middle-end/65595] New: [5 Regression] Linux kernel build failure: ICE: in as_a, at is-a.h:192

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65595

            Bug ID: 65595
           Summary: [5 Regression] Linux kernel build failure: ICE: in
                    as_a, at is-a.h:192
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: hubicka at gcc dot gnu.org

trippels@gcc2-power8 linux-3.18.8 % cat libcxgbi.i
extern void *memcpy(void *, const void *, unsigned long);
struct in6_addr {
  struct {
    int u6_addr32[4];
  };
};
struct foo {
  struct in6_addr daddr;
  struct in6_addr saddr;
} a;
extern void ip6_route_output(struct foo, int);
int b;
static void find_route_ipv6(struct in6_addr *p1) {
  if (p1)
    memcpy(0, p1, sizeof(struct in6_addr));
  ip6_route_output(a, b);
}
void cxgbi_ep_connect() { find_route_ipv6(0); }

trippels@gcc2-power8 linux-3.18.8 % gcc -O2 -c libcxgbi.i
libcxgbi.i: In function ‘find_route_ipv6.constprop’:
libcxgbi.i:18:1: internal compiler error: in as_a, at is-a.h:192
 void cxgbi_ep_connect() { find_route_ipv6(0); }
 ^
0x100f16e3 as_a<gcall*, gimple_statement_base>
        ../../gcc/gcc/is-a.h:192
0x1030ffb7 as_a<gcall*, gimple_statement_base>
        ../../gcc/gcc/is-a.h:192
0x1030ffb7 cgraph_update_edges_for_call_stmt_node
        ../../gcc/gcc/cgraph.c:1524
0x1031045f cgraph_update_edges_for_call_stmt(gimple_statement_base*,
tree_node*, gimple_statement_base*)
        ../../gcc/gcc/cgraph.c:1588
0x108720a3 fold_marked_statements
        ../../gcc/gcc/tree-inline.c:4843
0x10884ebf tree_function_versioning(tree_node*, tree_node*,
vec<ipa_replace_map*, va_gc, vl_embed>*, bool, bitmap_head*, bool,
bitmap_head*, basic_block_def*)
        ../../gcc/gcc/tree-inline.c:5813
0x103229ef cgraph_materialize_clone
        ../../gcc/gcc/cgraphclones.c:1056
0x103229ef symbol_table::materialize_all_clones()
        ../../gcc/gcc/cgraphclones.c:1153
0x1031c3cb symbol_table::compile()
        ../../gcc/gcc/cgraphunit.c:2326
0x1031ee67 symbol_table::finalize_compilation_unit()
        ../../gcc/gcc/cgraphunit.c:2444
0x1015d1c7 c_write_global_declarations()
        ../../gcc/gcc/c/c-decl.c:10801
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