https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120142
Bug ID: 120142
Summary: internal compiler error: in tsubst, at cp/pt.cc:16670
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ldalessandro at gmail dot com
Target Milestone: ---
Created attachment 61346
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61346&action=edit
cvise reduced testcase
Cvise reduced test case attached.
It fails "internal compiler error: in tsubst, at cp/pt.cc:16670" on 13, 14, and
15, and it fails "internal compiler error: tree check: accessed elt 1 of
'tree_vec' with -1 elts in add_to_template_args, at cp/pt.cc:612" on 16/trunk.
It's not pretty, but I tried to reduce it farther to make it cleaner but I
eliminated the tsubst failure when I did so.
Compile with C++23.
Live: https://godbolt.org/z/aMarEY63E [May 6th, 2025]
