[Bug c++/77655] [6/7 Regression]ICE on invalid c++ code on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1plus))

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77655

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Causes a stack overflow in:

#174 0x0000000000ddeefe in dump_type(cxx_pretty_printer*, tree_node*, int) ()
at ../../gcc/cp/error.c:510
#175 0x000000000061b56d in dump_template_bindings (typenames=0x7ffff67e1f28,
args=0x7ffff67d7c80, parms=<optimized out>, pp=0x1e2af40
<actual_pretty_printer>) at ../../gcc/cp/error.c:354
#176 dump_substitution (pp=0x1e2af40 <actual_pretty_printer>, t=<optimized
out>, template_parms=<optimized out>, template_args=0x7ffff67d7c80,
flags=<optimized out>) at ../../gcc/cp/error.c:1450
#177 0x0000000000619b24 in dump_scope (flags=1, scope=<optimized out>,
pp=0x1e2af40 <actual_pretty_printer>) at ../../gcc/cp/error.c:153
#178 dump_aggr_type (flags=0, t=0x7ffff67e4150, pp=0x1e2af40
<actual_pretty_printer>) at ../../gcc/cp/error.c:664
#179 dump_type (pp=0x1e2af40 <actual_pretty_printer>, t=<optimized out>,
flags=0) at ../../gcc/cp/error.c:443
#180 0x0000000000ddf47a in dump_type_prefix (flags=0, t=0x7ffff67e4150,
pp=0x1e2af40 <actual_pretty_printer>) at ../../gcc/cp/error.c:811
#181 dump_type_prefix(cxx_pretty_printer*, tree_node*, int) () at
../../gcc/cp/error.c:731
#182 0x0000000000ddeefe in dump_type(cxx_pretty_printer*, tree_node*, int) ()
at ../../gcc/cp/error.c:510
#183 0x000000000061b56d in dump_template_bindings (typenames=0x7ffff67e1e38,
args=0x7ffff67d7c80, parms=<optimized out>, pp=0x1e2af40
<actual_pretty_printer>) at ../../gcc/cp/error.c:354
#184 dump_substitution (pp=0x1e2af40 <actual_pretty_printer>, t=<optimized
out>, template_parms=<optimized out>, template_args=0x7ffff67d7c80,
flags=<optimized out>) at ../../gcc/cp/error.c:1450
#185 0x0000000000619b24 in dump_scope (flags=1, scope=<optimized out>,
pp=0x1e2af40 <actual_pretty_printer>) at ../../gcc/cp/error.c:153
#186 dump_aggr_type (flags=0, t=0x7ffff67e4150, pp=0x1e2af40
<actual_pretty_printer>) at ../../gcc/cp/error.c:664
#187 dump_type (pp=0x1e2af40 <actual_pretty_printer>, t=<optimized out>,
flags=0) at ../../gcc/cp/error.c:443
#188 0x0000000000ddf47a in dump_type_prefix (flags=0, t=0x7ffff67e4150,
pp=0x1e2af40 <actual_pretty_printer>) at ../../gcc/cp/error.c:811
#189 dump_type_prefix(cxx_pretty_printer*, tree_node*, int) () at
../../gcc/cp/error.c:731
#190 0x0000000000ddeefe in dump_type(cxx_pretty_printer*, tree_node*, int) ()
at ../../gcc/cp/error.c:510
#191 0x000000000061c7b8 in args_to_string (verbose=0, p=0x7ffff67e1e10) at
../../gcc/cp/error.c:3091
#192 cp_printer (pp=0x1fc6050, text=0x7fffffffc930, spec=<optimized out>,
precision=<optimized out>, wide=<optimized out>, set_locus=<optimized out>,
verbose=false) at ../../gcc/cp/error.c:3520
#193 0x000000000142d125 in pp_format(pretty_printer*, text_info*) () at
../../gcc/pretty-print.c:631
#194 0x000000000142b3ca in diagnostic_report_diagnostic(diagnostic_context*,
diagnostic_info*) () at ../../gcc/diagnostic.c:823
#195 0x0000000000d3b822 in error_at (loc=loc@entry=2147483648,
gmsgid=gmsgid@entry=0x14bdd48 "no matching function for call to %<%D(%A)%>") at
../../gcc/diagnostic.c:1184
#196 0x00000000005e4d12 in print_error_for_call_failure
(fn=fn@entry=0x7ffff67d78e0, args=0x7ffff67c3f00, candidates=0x2024fe0) at
../../gcc/cp/call.c:4054

#197 0x00000000005e00b4 in build_new_function_call (fn=0x7ffff67d78e0,
args=0x7fffffffcc18, koenig_p=<optimized out>, complain=<optimized out>) at
../../gcc/cp/call.c:4120
#198 0x0000000000e1cea9 in finish_call_expr(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, bool, int) () at ../../gcc/cp/semantics.c:2461
#199 0x0000000000daf277 in tsubst_copy_and_build(tree_node*, tree_node*, int,
tree_node*, bool, bool) () at ../../gcc/cp/pt.c:16641
#200 0x0000000000db9080 in tsubst_expr(tree_node*, tree_node*, int, tree_node*,
bool) () at ../../gcc/cp/pt.c:15816
#201 0x0000000000dc17d2 in gen_elem_of_pack_expansion_instantiation
(in_decl=<optimized out>, complain=<optimized out>, args=<optimized out>,
index=<optimized out>, parm_packs=<optimized out>, pattern=<optimized out>) at
../../gcc/cp/pt.c:10625
#202 tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*) () at
../../gcc/cp/pt.c:11047
#203 0x0000000000db0942 in tsubst_copy_and_build(tree_node*, tree_node*, int,
tree_node*, bool, bool) () at ../../gcc/cp/pt.c:16502
---Type <return> to continue, or q <return> to quit---
#204 0x0000000000dac4b4 in tsubst(tree_node*, tree_node*, int, tree_node*) ()
at ../../gcc/cp/pt.c:13545
#205 0x0000000000dbb404 in tsubst_function_type(tree_node*, tree_node*, int,
tree_node*) () at ../../gcc/cp/pt.c:12617
#206 0x0000000000dac38b in tsubst(tree_node*, tree_node*, int, tree_node*) ()
at ../../gcc/cp/pt.c:13375
#207 0x0000000000db6902 in tsubst_decl(tree_node*, tree_node*, int) () at
../../gcc/cp/pt.c:11813
#208 0x0000000000dbdaab in instantiate_template_1 (complain=3, orig_args=0x3,
tmpl=0x7ffff67da180) at ../../gcc/cp/pt.c:17415
#209 instantiate_template(tree_node*, tree_node*, int) () at
../../gcc/cp/pt.c:17466
#210 0x0000000000dbbcff in fn_type_unification(tree_node*, tree_node*,
tree_node*, tree_node* const*, unsigned int, tree_node*, unification_kind_t,
int, bool, bool) () at ../../gcc/cp/pt.c:17825
#211 0x00000000005e5064 in print_z_candidate (loc=loc@entry=2147483650,
msgstr=msgstr@entry=0x14bcdbf "candidate:",
candidate=candidate@entry=0x2024f20) at ../../gcc/cp/call.c:3440
#212 0x00000000005e4e20 in print_z_candidates (loc=2147483650,
candidates=<optimized out>) at ../../gcc/cp/call.c:3510
#213 0x00000000005e4d25 in print_error_for_call_failure
(fn=fn@entry=0x7ffff67d79a0, args=<optimized out>, candidates=<optimized out>)
at ../../gcc/cp/call.c:4059
#214 0x00000000005e00b4 in build_new_function_call (fn=0x7ffff67d79a0,
args=0x7fffffffd418, koenig_p=<optimized out>, complain=<optimized out>) at
../../gcc/cp/call.c:4120
#215 0x0000000000e1cea9 in finish_call_expr(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, bool, int) () at ../../gcc/cp/semantics.c:2461
#216 0x0000000000daf277 in tsubst_copy_and_build(tree_node*, tree_node*, int,
tree_node*, bool, bool) () at ../../gcc/cp/pt.c:16641
#217 0x0000000000db9080 in tsubst_expr(tree_node*, tree_node*, int, tree_node*,
bool) () at ../../gcc/cp/pt.c:15816
#218 0x0000000000db918f in tsubst_expr(tree_node*, tree_node*, int, tree_node*,
bool) () at ../../gcc/cp/pt.c:15132
#219 0x0000000000db938c in tsubst_expr(tree_node*, tree_node*, int, tree_node*,
bool) () at ../../gcc/cp/pt.c:15118
#220 0x0000000000db914e in tsubst_expr(tree_node*, tree_node*, int, tree_node*,
bool) () at ../../gcc/cp/pt.c:15304
#221 0x0000000000dbf046 in instantiate_decl(tree_node*, int, bool) () at
../../gcc/cp/pt.c:22011
#222 0x0000000000da0089 in instantiate_pending_templates(int) () at
../../gcc/cp/pt.c:22128
#223 0x0000000000dd9cb7 in c_parse_final_cleanups() () at
../../gcc/cp/decl2.c:4599
#224 0x00000000013b64b9 in compile_file() () at ../../gcc/toplev.c:463
#225 0x0000000000d74460 in do_compile () at ../../gcc/toplev.c:1986
#226 toplev::main(int, char**) () at ../../gcc/toplev.c:2094
#227 0x0000000000d75c27 in main (argc=13, argv=0x7fffffffdb48) at
../../gcc/main.c:39