https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97177
Bug ID: 97177
Summary: [11 Regression] ICE in dependent_type_p, at
cp/pt.c:26475
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: asolokha at gmx dot com
Target Milestone: ---
g++-11.0.0-alpha20200920 snapshot (g:363e7755f227656684c8e284307ceee451503ca4)
ICEs when compiling the following testcase, reduced from
test/CXX/dcl.decl/dcl.meaning/dcl.array/p3.cpp from the clang 10.0.1 test
suite:
namespace
{
template <typename WF>
void
ml ()
{
extern WF cr;
static_assert (sizeof (cr) == 12, "");
}
void
qc ()
{
ml<int[3]> ();
}
}
% g++-11.0.0 -c zzrm4j0q.cpp
zzrm4j0q.cpp: In instantiation of 'void {anonymous}::ml() [with WF = int [3]]':
zzrm4j0q.cpp:15:17: required from here
zzrm4j0q.cpp:9:20: internal compiler error: in dependent_type_p, at
cp/pt.c:26475
9 | static_assert (sizeof (cr) == 12, "");
| ^~~~~~~~~~~
0x670229 dependent_type_p(tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:26475
0xa9a66f cxx_sizeof_or_alignof_type(unsigned int, tree_node*, tree_code, bool,
bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/typeck.c:1713
0xa186dd tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:19668
0xa181b3 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:19579
0xa2386f tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:18889
0xa25d8d tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:18446
0xa25fa1 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:17961
0xa24f2e tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:18281
0xa2c70f tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:17946
0xa2c70f instantiate_body
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:25577
0xa2d88f instantiate_decl(tree_node*, bool, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:25865
0xa4ff9b instantiate_pending_templates(int)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:25944
0x95175b c_parse_final_cleanups()
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/decl2.c:4920
