https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100101
Bug ID: 100101
Summary: [11 Regression] ICE with
-Wzero-as-null-pointer-constant
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
Target Milestone: ---
Compiling the following valid code snippet with
"-Wzero-as-null-pointer-constant" triggers an assertion on trunk.
This is a recent regression from within the last month.
==============================================================================
template <typename T> struct A
{
template <typename U> static char foo(U*, int* = 0);
static const bool value = sizeof(foo(static_cast<T*>(nullptr))) > 0;
};
template <bool b> struct B
{
static const bool value = b;
};
template <typename T> struct C
{
typedef B<A<T>::value> type;
};
template <typename T>
void bar() noexcept(A<T>::value && C<T>::type::value) {}
void baz()
{
bar<void>();
}
==============================================================================
'
Internal compiler error: Error reporting routines re-entered.
0x8cfbf8 convert_default_arg(tree_node*, tree_node*, tree_node*, int, int)
../../gcc/gcc/cp/call.c:8348
0x8dc177 build_over_call
../../gcc/gcc/cp/call.c:9230
0x8da248 build_new_method_call_1
../../gcc/gcc/cp/call.c:10783
0x8db2af build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
../../gcc/gcc/cp/call.c:10858
0xae76dd finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/gcc/cp/semantics.c:2751
0xa99115 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:20484
0xa969ec tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:19958
0xa957f3 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:19876
0xaa0e48 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:19164
0xaaaa06 instantiate_decl(tree_node*, bool, bool)
../../gcc/gcc/cp/pt.c:26117
0x98fc9a maybe_instantiate_decl(tree_node*)
../../gcc/gcc/cp/decl2.c:5460
0x990ff8 maybe_instantiate_decl(tree_node*)
../../gcc/gcc/cp/decl2.c:5663
0x990ff8 mark_used(tree_node*, int)
../../gcc/gcc/cp/decl2.c:5689
0xa951f0 tsubst_qualified_id
../../gcc/gcc/cp/pt.c:16466
0xa96ee8 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:19914
0xaa0e48 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:19164
0xab59ce tsubst_template_args(tree_node*, tree_node*, int, tree_node*)
../../gcc/gcc/cp/pt.c:13384
0xabed23 tsubst_aggr_type
../../gcc/gcc/cp/pt.c:13587
0xa9dd10 tsubst_decl
../../gcc/gcc/cp/pt.c:14847
0xacc3dd instantiate_class_template_1
../../gcc/gcc/cp/pt.c:12031
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