https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88983
Bug ID: 88983
Summary: ICE in label_matches, at cp/constexpr.c:4035
Product: gcc
Version: 6.0
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++-9.0.0-alpha20190120 snapshot (r268107), 8.2, 7.4, 6.3 ICE when compiling
the following testcase reduced from test/SemaCXX/constant-expression-cxx1y.cpp
from the clang 7.0.1 testsuite:
constexpr int
ni (int ay)
{
switch (ay)
{
if (1)
{
case 1:
return 1;
}
else
{
default:
;
}
}
return 0;
}
static_assert (ni (1), "");
% g++-9.0.0-alpha20190120 -c xd96vus4.cpp
xd96vus4.cpp:21:19: in 'constexpr' expansion of 'ni(1)'
xd96vus4.cpp:21:27: internal compiler error: in label_matches, at
cp/constexpr.c:4035
21 | static_assert (ni (1), "");
| ^
0x5cde7e label_matches
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4035
0x8cc336 cxx_eval_constant_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4223
0x8cc53c cxx_eval_constant_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4484
0x8ccd7f cxx_eval_switch_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4148
0x8ccd7f cxx_eval_constant_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4938
0x8cce62 cxx_eval_statement_list
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4073
0x8cce62 cxx_eval_constant_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4836
0x8cba23 cxx_eval_call_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:1799
0x8cc800 cxx_eval_constant_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:4357
0x8d2672 cxx_eval_outermost_constant_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:5095
0x8d2dc8 maybe_constant_value(tree_node*, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/constexpr.c:5327
0x8e5265 cp_fully_fold(tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/cp-gimplify.c:2163
0xa63fa4 cp_build_binary_op(op_location_t const&, tree_code, tree_node*,
tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/typeck.c:5538
0xa66aac build_binary_op(unsigned int, tree_code, tree_node*, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/typeck.c:4246
0xa66b2b cp_truthvalue_conversion(tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/typeck.c:5864
0x8e9d8d ocp_convert(tree_node*, tree_node*, int, int, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/cvt.c:844
0x8eb37d cp_convert(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/cvt.c:637
0x8eb37d cp_convert_and_check(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/cvt.c:656
0x896934 convert_like_real
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/call.c:7327
0x897af0 perform_implicit_conversion_flags(tree_node*, tree_node*, int, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/cp/call.c:11043
