http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58585
Bug ID: 58585
Summary: [4.9 Regression] ICE in ipa with virtual inheritance
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
The following valid code snippet triggers an ICE on trunk when compiled with
"-O2 -fPIC":
================================
struct A
{
virtual void foo() {}
void bar();
};
void A::bar() { foo(); }
struct B : virtual A
{
virtual void foo() {}
char c;
};
struct C : virtual B
{
C();
};
C::C() { bar(); }
================================
bug.cc:18:17: internal compiler error: in ipa_get_indirect_edge_target_1, at
ipa-cp.c:1570
C::C() { bar(); }
^
0xf46f8d ipa_get_indirect_edge_target_1
../../gcc/gcc/ipa-cp.c:1569
0x9958fe estimate_edge_devirt_benefit
../../gcc/gcc/ipa-inline-analysis.c:2783
0x9958fe estimate_edge_size_and_time
../../gcc/gcc/ipa-inline-analysis.c:2815
0x9958fe estimate_calls_size_and_time
../../gcc/gcc/ipa-inline-analysis.c:2868
0x996a72 estimate_node_size_and_time
../../gcc/gcc/ipa-inline-analysis.c:2955
0x999046 do_estimate_edge_size(cgraph_edge*)
../../gcc/gcc/ipa-inline-analysis.c:3498
0x99918c estimate_edge_size
../../gcc/gcc/ipa-inline.h:275
0x99918c estimate_edge_growth
../../gcc/gcc/ipa-inline.h:287
0x99918c do_estimate_growth_1
../../gcc/gcc/ipa-inline-analysis.c:3609
0x8004de cgraph_for_node_and_aliases(cgraph_node*, bool (*)(cgraph_node*,
void*), void*, bool)
../../gcc/gcc/cgraph.c:2156
0x999617 do_estimate_growth(cgraph_node*)
../../gcc/gcc/ipa-inline-analysis.c:3623
0xf5513d estimate_growth
../../gcc/gcc/ipa-inline.h:262
0xf5513d inline_small_functions
../../gcc/gcc/ipa-inline.c:1549
0xf5513d ipa_inline
../../gcc/gcc/ipa-inline.c:2009
0xf5513d execute
../../gcc/gcc/ipa-inline.c:2379
Please submit a full bug report, [etc.]
The regression appeared between 4.9.0-20130922 and 4.9.0-20130926.
