https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108075
Bug ID: 108075
Summary: Undefined typeinfo for _Float16 (_ZTIDF16_)
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: andrey458641387 at gmail dot com
Target Milestone: ---
The following program compiles but does not link:
#include <typeinfo>
const std::type_info &a = typeid(_Float16);
with the error "undefined reference to `_ZTIDF16_'".
Compiler Explorer link: https://godbolt.org/z/eo6fbWTPr.
As a result, using `std::vector<_Float16>` with `_GLIBCXX_DEBUG` fails with
(https://godbolt.org/z/5T5GbPs7f):
in function
`_ZN11__gnu_debug16_Error_formatter10_ParameterC2IDF16_EERKPT_PKcNS0_12_Is_iteratorE':
include/c++/13.0.0/debug/formatter.h:369: undefined reference to
`_ZTIPDF16_'
This issue exists in GCC >= 12, including trunk (at least as of CE gcc version
13.0.0 20221212).
Checked on Linux x86_64 and aarch64 (on CE).
