https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97187
Bug ID: 97187
Summary: [11 Regression] ICE: tree check: expected tree_list,
have error_mark in tsubst_copy_and_build, at
cp/pt.c:19782
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: error-recovery
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 w/ -fno-exceptions:
auto yp = [] { return 0; };
template <class DI>
DI
zl ()
{
auto au = [] () -> DI { return *new auto (true ? yp : throw); };
return au ();
}
auto
vd ()
{
return zl <decltype (yp)> ();
}
% g++-11.0.0 -fno-exceptions -c gluna7vl.cc
gluna7vl.cc: In instantiation of 'DI zl() [with DI = <lambda()>]':
gluna7vl.cc:15:30: required from here
gluna7vl.cc:7:57: error: exception handling disabled, use '-fexceptions' to
enable
7 | auto au = [] () -> DI { return *new auto (true ? yp : throw); };
| ^~~~~
gluna7vl.cc:7:35: internal compiler error: tree check: expected tree_list, have
error_mark in tsubst_copy_and_build, at cp/pt.c:19782
7 | auto au = [] () -> DI { return *new auto (true ? yp : throw); };
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x7d81f2 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/tree.c:9729
0x677fb0 tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/tree.h:3299
0x677fb0 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:19782
0xa19bea 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:19399
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
0xa24fe0 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:17971
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
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
0xa50ac7 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
0xa50ac7 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:19231
0xa1a9fc 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:20546
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
0xa2a3f1 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
0xa2a3f1 tsubst_init
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200920/work/gcc-11-20200920/gcc/cp/pt.c:16332
0xa2801b 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:18110
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
