https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86881
Bug ID: 86881
Summary: tree check fail with flag Wshadow-compatible-local
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C++ code:
void a() {
auto b([] {});
if (0)
auto b = 0;
}
compiled with recent gcc trunk and flag -Wshadow-compatible-local
as so:
$ ~/gcc/results.263341/bin/gcc -c -std=gnu++14 -Wshadow-compatible-local
bug454.cc
does this:
bug454.cc:4:10: internal compiler error: tree check: expected record_type or
uni
on_type or qual_union_type, have template_type_parm in lookup_base, at
cp/search
.c:198
auto b = 0;
^
0x7619b8 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../trunk/gcc/tree.c:9351
0x98faee tree_check3(tree_node*, char const*, int, char const*, tree_code,
tree_
code, tree_code)
../../trunk/gcc/tree.h:3154
0x98faee lookup_base(tree_node*, tree_node*, int, base_kind*, int)
../../trunk/gcc/cp/search.c:198
0x81442a build_user_type_conversion_1
../../trunk/gcc/cp/call.c:3782
0x815bc1 implicit_conversion
../../trunk/gcc/cp/call.c:1902
0x819d18 can_convert_arg(tree_node*, tree_node*, tree_node*, int, int)
../../trunk/gcc/cp/call.c:10673
0x8f4a4e check_local_shadow
../../trunk/gcc/cp/name-lookup.c:2737
The problem seems to have existed since before revision 262370.
