https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63476
Bug ID: 63476
Summary: [5 Regression] ICE: tree check: expected ssa_name,
have var_decl in walk_aliased_vdefs_1, at
tree-ssa-alias.c:2689
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
On ppc64 I get:
trippels@gcc1-power7: % cat nsCacheService.ii
enum class nsresult;
class A;
class B
{
public:
B (int);
A *operator->();
};
class C
{
};
class A
{
public:
virtual nsresult AddObserver (const char *, C *, bool) = 0;
};
class D : A
{
nsresult
AddObserver (const char *p1, C *p2, bool p3)
{
AddObserver (p1, p2, p3);
}
};
char *prefList[]{};
class F : C
{
nsresult Install ();
};
nsresult
F::Install ()
{
B branch = 0;
for (int i;;)
branch->AddObserver (prefList[i], this, false);
}
trippels@gcc1-power7: % c++ -c -std=gnu++0x -O3 nsCacheService.ii
nsCacheService.ii: In function ‘virtual nsresult D::AddObserver(const char*,
C*, bool)’:
nsCacheService.ii:20:3: internal compiler error: tree check: expected ssa_name,
have var_decl in walk_aliased_vdefs_1, at tree-ssa-alias.c:2689
AddObserver (const char *p1, C *p2, bool p3)
^
0x10c40f8f tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9175
0x10a88313 tree_check
../../gcc/gcc/tree.h:2733
0x10a88313 walk_aliased_vdefs_1
../../gcc/gcc/tree-ssa-alias.c:2689
0x10a883d7 walk_aliased_vdefs(ao_ref*, tree_node*, bool (*)(ao_ref*,
tree_node*, void*), void*, bitmap_head**, bool*)
../../gcc/gcc/tree-ssa-alias.c:2741
0x1074de9f ipa_polymorphic_call_context::get_dynamic_type(tree_node*,
tree_node*, tree_node*, gimple_statement_base*)
../../gcc/gcc/ipa-polymorphic-call.c:1584
0x10b30543 eliminate_dom_walker::before_dom_children(basic_block_def*)
../../gcc/gcc/tree-ssa-pre.c:4285
0x10f1925b dom_walker::walk(basic_block_def*)
../../gcc/gcc/domwalk.c:177
0x10b2e1c3 eliminate
../../gcc/gcc/tree-ssa-pre.c:4431
0x10b3839b execute
../../gcc/gcc/tree-ssa-pre.c:4762
0x10b3839b execute
../../gcc/gcc/tree-ssa-pre.c:4721
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
