https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97905
Bug ID: 97905
Summary: ice in duplicate_decls, at cp/decl.c:2754
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 49594
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49594&action=edit
gzipped C++ source code
For the attached C++ code, recent gcc trunk does this:
route.cc:37:12: internal compiler error: in duplicate_decls, at cp/decl.c:2754
0x6f5168 duplicate_decls(tree_node*, tree_node*, bool, bool)
../../trunk.git/gcc/cp/decl.c:2752
0x79cf73 do_pushdecl(tree_node*, bool)
../../trunk.git/gcc/cp/name-lookup.c:2970
0x79fed5 pushdecl(tree_node*, bool)
../../trunk.git/gcc/cp/name-lookup.c:3109
0x79fed5 maybe_push_decl(tree_node*)
../../trunk.git/gcc/cp/name-lookup.c:3140
The bug seems to exist sometime between git hash ecf65330c11544eb,
dated 20201117 and hash cb1a4876a0e724ca, dated 20201118.
Flag -march=bdver2 required.
Since I now understand git bisect, I will have a go at finding a broken
commit.
I will also have my usual go at reducing the code.
